Visual Studio IDE - basic and useful shortcuts
CTRL + F -- search string/text
ESC --- change focus [for example, after you found the string and wanted to read the definition. You need to press this escape key first to change focus.
F12 - Go to definition
SHIFT + F12 - Find all the references
F8 --- Go to next results [for example, after you find all the references, you want to browse every reference one by one. F8 will help you to move to next one.]
CTRL + plus ----- Navigate forward
CTRL + minus ------ Navigate backward
Of course, there are more useful shortcuts, but these are the most simple and basic ones!!
Note: In VS 2010, actually there is a new one, CTRL + , which one is similar as CTRL + F, but more powerful. Have a try on it.