Updated Troubleshooting (markdown)

Troubleshooting.md

@@ -1,3 +1,33 @@
-What to do if you're having a problem
+This page is meant to describe the most common problems with oh-my-zsh and what you can do to diagnose them:
+
+### Keyboard shortcut problems
+
+Example: 
+```sh
+bindkey '^L' clear-screen
+```
+
+Two main things could go wrong:
+
+1. The key sequence (`^L` in the example) does not match the key sequence being sent to the terminal:  
+
+   You can see the exact sequence a keyboard shortcut sents by pressing `CTRL`+`V` and then the keyboard shortcut.  
+   For example: `CTRL`+`V`, `CTRL`+`L` will output `^L` (`^` represents the Control key).
+
+2. The command executed (`clear-screen` in the example) has an error. In that case, post both the key binding and the definition of the command if exists, like so:
+
+   - **key binding:** `bindkey '^[[1;6D'`  
+     will print `"^[[1;6D" insert-cycledleft`
+   - **command definition:** `which insert-cycledleft`  
+     will print `insert-cycledleft () { ... }`
+
+Notice that sometimes the command is a builtin [zle widget](http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html) and so the `which` command won't work. Just post the key binding and we'll figure it out.
+
+### Completion problems
+
+*...to be filled...*
+
+
+### Everything else
 
 *...to be filled...*