diff --git a/.vuepress/components/code1.vue b/.vuepress/components/code1.vue
index 983ecce..720c453 100644
--- a/.vuepress/components/code1.vue
+++ b/.vuepress/components/code1.vue
@@ -42,14 +42,17 @@
       </div>
       <div class="code-content">
 
-        <div class="language-js line-numbers-mode"><pre class="language-js"><code>Contract<span class="token punctuation">.</span><span class="token function">trackBalance</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">subscribe</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">balance</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
-    console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">"ETH balance is "</span><span class="token punctuation">,</span> balance<span class="token punctuation">)</span>
-  <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+        <div class="language-js line-numbers-mode"><pre class="language-js"><code><span class="token keyword">const</span> address <span class="token operator">=</span> <span class="token string">"0x0001020304050607080900010203040506070809"</span><span class="token punctuation">;</span>
 
-  Contract<span class="token punctuation">.</span><span class="token function">trackBalance</span><span class="token punctuation">(</span><span class="token string">"0x744d70fdbe2ba4cf95131626614a1763df805b9e"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">subscribe</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">balance</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
-    console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">"SNT balance is "</span><span class="token punctuation">,</span> balance<span class="token punctuation">)</span>
-  <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
-  </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div>
+subspace<span class="token punctuation">.</span><span class="token function">trackBalance</span><span class="token punctuation">(</span>address<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">subscribe</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">balance</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
+  console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">"ETH balance is "</span><span class="token punctuation">,</span> balance<span class="token punctuation">)</span>
+<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+
+subspace<span class="token punctuation">.</span><span class="token function">trackBalance</span><span class="token punctuation">(</span>address, <span class="token string">"0x744d70fdbe2ba4cf95131626614a1763df805b9e"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">subscribe</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">balance</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
+  console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">"SNT balance is "</span><span class="token punctuation">,</span> balance<span class="token punctuation">)</span>
+<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+
+</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br></div></div>
 
       </div>
     </div>
@@ -94,8 +97,7 @@
 </template>
 
 <script>
-export default {
-}
+export default {};
 </script>
 
 <style lang="css" scoped>
@@ -103,7 +105,8 @@ export default {
   fill: url(#linear-gradient-404);
 }
 
-.cls-2, .cls-6 {
+.cls-2,
+.cls-6 {
   opacity: 0.65;
 }
 
@@ -171,7 +174,8 @@ export default {
   fill: url(#linear-gradient-404-9);
 }
 
-.cls-18, .cls-19 {
+.cls-18,
+.cls-19 {
   fill: #fff;
 }
 
@@ -187,11 +191,16 @@ export default {
   fill: #2d2d2d;
 }
 
-.cls-22, .cls-23, .cls-27, .cls-28, .cls-29 {
+.cls-22,
+.cls-23,
+.cls-27,
+.cls-28,
+.cls-29 {
   fill: none;
 }
 
-.cls-22, .cls-23 {
+.cls-22,
+.cls-23 {
   stroke: #ecf4f8;
   stroke-linecap: round;
   stroke-width: 0.96px;
@@ -201,7 +210,10 @@ export default {
   stroke-linejoin: round;
 }
 
-.cls-23, .cls-27, .cls-28, .cls-29 {
+.cls-23,
+.cls-27,
+.cls-28,
+.cls-29 {
   stroke-miterlimit: 10;
 }
 
@@ -221,7 +233,9 @@ export default {
   stroke: #fbed21;
 }
 
-.cls-27, .cls-28, .cls-29 {
+.cls-27,
+.cls-28,
+.cls-29 {
   stroke-width: 8px;
 }
 
diff --git a/api.md b/api.md
index 602687e..2ecf051 100644
--- a/api.md
+++ b/api.md
@@ -20,7 +20,55 @@ Initializes **Subspace**
 ### `close()`
 Dispose and perform the cleanup necessary to remove the internal subscriptions and interval timers created by **Subspace** during its normal execution.
 
-## Data tracking methods
+### `contract(instance|{abi,address})`
+Adds a `track` method to the web3 contract objects. You can obtain this functionality by passing a `web3.eth.Contract` instance, or the `abi` and `address` of your contract
+
+**Returns**
+`web3.eth.Contract` object enhanced with `.track()` functions for methods and events.
+
+## Contract methods
+
+### `myContract.events.MyEvent.track([options])`
+Track a contract event.
+
+**Parameters**
+1. `options` - `Object` (optional): web3 filter options object to limit the number of events based on a block number range, or indexed filters
+    - `filter` - `Object` (optional): Lets you filter events by indexed parameters, e.g. `{filter: {myNumber: [12,13]}}` means all events where `"myNumber"` is `12` or `13`.
+    - `fromBlock` - `Number` (optional): The block number from which to get events on.
+    - `toBlock` - `Number` (optional): The block number to get events up to (Defaults to `"latest"`)
+    - `topics` - `Array` (optional): This allows you to manually set the topics for the event filter. If given the filter property and event signature, (`topic[0]`) will not be set automatically.
+
+**Returns**
+`RxJS Observable` which will stream the event `returnValues`.
+
+
+### `myContract.methods.myMethod([param1[, ...]]).track([callOptions])`
+Track a constant function / contract state variable on each block mined, or depending on the `callInterval` option used during **Subspace** initialization.
+
+**Parameters**
+1. `callOptions` - `Object` (optional): The options used for calling.
+    - `from` - `String` (optional): The address the call “transaction” should be made from.
+    - `gasPrice` - `String` (optional): The gas price in wei to use for this call “transaction”.
+    - `gas` - `Number` (optional): The maximum gas provided for this call “transaction” (gas limit).
+
+**Returns**
+`RxJS Observable` which will stream the function / variable values. Data type will depend on the contract function invoked. 
+
+
+### `myContract.trackBalance(address [, tokenAddress])`
+Track a contract's balance changes for an address on each block mined, or depending on the `callInterval` option used during **Subspace** initialization.
+
+**Parameters**
+1. `address` - `String`: The address to get the balance of.
+2. `tokenAddress` - `String` (optional): If you want to track the balance for an ERC20 contract, here you can specify the token address. Otherwise, Only ETH balances will be returned.
+
+**Returns**
+`RxJS Observable` which will stream a string containing the address balance.
+
+
+## Low level API for data tracking
+
+These are used in case you don't want to decorate your web3 contract objects, or if you want to track the balance for an specific address.
 
 ### `trackEvent(contractObject, eventName [, options])`
 Track a contract event.