I'm a big fan of cheatsheets, one of the main problems with working in web-development is that you are constantly switching between different languages and platforms. Inevitably I find that my mind goes blank at certain points when I'm trying to remember a syntax format or a function name for instance. This is where a cheatsheet makes a handy reminder rather than diving into a book or online reference. Here's a list that I've gathered from Cheat-Sheets.org