To get stuff on hot bars:
Say its a spell you want to put there.
You have a spell memmed on the spell bar.
Put cursor over the spell on the spell bar that you want to move to the hot bar
Hold down the left click button
A new little icon will appear
Drag it to the hot bar number you want to press to cast that spell.
Move you finger up from the left click button.
Voila!
For clickies I think its about the same thing.
I'll check when I get ingame and write down the implicit actions I take to get stuff on the hot bar. If I got it wrong I'll up date my instructions.
If someone else already knows this just correct what I have written.