Hehe in the early stages you probably won't even seeing the edges. :) I recommend reading all the documentation about Projects, Snippets and Language Grammars a few times, as well as installing the GetBundles bundle. Also, press ctrl+opt+cmd+K to bring up a fat menu of keyboard shortcuts. I'd also read the keyboard shortcut documentation because the shortcuts are somewhat organized according to their functions (for example, shift+ctrl+opt+<letter> type shortcuts are used to switch your current language.