I am sick of having to click on the pencil tool everytime I cut something, theres any way to set the pencil tool shortcut as "Q"?

 

Sadly you can't make custom shortcuts. Pencil tool is P and Brush tool is B. Make sure you don't have "typing to keyboard" enabled though.
If it really annoys you I suppose you can remap your keyboard to have P register as Q

 

If you right-click and hold, you get the slice tool.
If you double right-click you get the Mute tool.
If you middle click, HOLD then Right-click you get submenu of tools to select...There are others.
RTM , it's all in there.