Computersight -

here are a few shortcuts on a mac:

command c – copy

command v – paste

command q – quit

command n – new window/ game

command t – new tab

command p – print

command m – minimize

command z  - undo last action

command shift z – redo last undone action

command x – cut

command s – save

command o – open

Also, if you need to use two buttons on a mouse, but it only has one button, you can hold down control and click for it to be a right click, and click normally for a left click.