I am a fan of shortcuts or hot keys. Here are a few BlackBerry hot key combos. Keep in mind that these hot keys do not all work with each other. For example, some will work with older phones while others will not. Most users will find only a few important ones helpful.
-Soft reset (similar to Ctrl + Alt + Del in Windows): Press Alt + Shift + Del.
-Switch applications: Press Alt + Esc.
-Move icons on home screen: Highlight the icon you want to move, hold Alt, and then use the wheel to move.
-When emailing, if you type the first part of an email address and hit Space, your device will put in a @. Also, a space after it will put in a period.
-Holding # will let you switch to vibrate mode and back to current profile.