Edit FAQ.md.

- Edit broken issue link.
- Add short table of contents at the top.

FAQ.md

@@ -2,7 +2,11 @@
 
 Please check here before posting a new issue.
 
-### Why do I get ["error: array input is not a constant array of tensors"](https://github.com/tensorflow/swift/issues/10)?
+* [Why do I get "error: array input is not a constant array of tensors"?](#why-do-i-get-error-array-input-is-not-a-constant-array-of-tensors)
+* [Why do I get "error: internal error generating TensorFlow graph: GraphGen cannot lower a 'send/receive' to the host yet"](#why-do-i-get-error-internal-error-generating-tensorflow-graph-graphgen-cannot-lower-a-sendreceive-to-the-host-yet)
+* [How can I use Python 3 with the Python module?](#how-can-i-use-python-3-with-the-python-module)
+
+## Why do I get ["error: array input is not a constant array of tensors"](https://github.com/tensorflow/swift/issues/10)?
 
 If you ran into this error, you likely wrote some code using `Tensor` without running Swift with optimizations (`-O`). 
 
@@ -13,14 +17,14 @@ We're working on making `-O` not required, but in the meantime you need to speci
 Here's how to enable optimizations in different environments:
 
 * REPL: No need to add extra flags. Optimizations are on by default. 
-* Interpter: `swift -O main.swift`
+* Interpreter: `swift -O main.swift`
 * Compiler: `swiftc -O main.swift`
 * `swift build`: `swift build -Xswiftc -O`
 * Xcode: Go to `Build Settings > Swift Compiler > Code Generation > Optimization Level` and select `Optimize for Speed [-O]`.
   * You may also need to add `libtensorflow.so` and `libtensorflow_framework.so` to `Linked Frameworks and Libraries` and change `Runtime Search Paths`.
     See [this comment](https://github.com/tensorflow/swift/issues/10#issuecomment-385167803) for specific instructions with screenshots.
 
-### Why do I get ["error: internal error generating TensorFlow graph: GraphGen cannot lower a 'send/receive' to the host yet"](https://github.com/tensorflow/swift/issues/8)?
+## Why do I get ["error: internal error generating TensorFlow graph: GraphGen cannot lower a 'send/receive' to the host yet"](https://github.com/tensorflow/swift/issues/8)?
 
 This error is related to the [graph program extraction algorithm](https://github.com/tensorflow/swift/blob/master/docs/GraphProgramExtraction.md), specifically
 [host-graph communication](https://github.com/tensorflow/swift/blob/master/docs/GraphProgramExtraction.md#adding-hostgraph-communication).
@@ -51,7 +55,7 @@ Send/receive aren't fully implemented, which explains why you got your error.
 The core team is working on it as a high-priority feature.
 Once send/receive are done, your error should go away!
 
-To work around the generated "send" for this example, you can reorder the code:
+To work around the generated "send" for this particular example, you can reorder the code:
 
 ```swift
 import TensorFlow
@@ -60,10 +64,10 @@ let y = x + 1
 print(x)
 ```
 
-The `Tensor` code is no longer "interrupted" by host code so there's no need for "send"!
+The `Tensor` code is no longer "interrupted" by host code so there's no need for "send".
 
-### How can I use Python 3 with the `Python` module?
+## How can I use Python 3 with the `Python` module?
 
 Currently, Swift is hard-coded to use Python 2.7.
 Adding proper Python 3 support is non-trivial but in discussion.
-See issue #13 for more information.
+See [this issue](https://github.com/tensorflow/swift/issues/13) for more information.