To execute a forward combo, press W to move forward when starting a series of attacks. This is effective when facing a single opponent. To execute a left/right combo, press A or D to move left or right when you start a series of attacks. This is effective against multiple opponents. To execute a chop combo, press S to move back when starting a series of attacks.

You can make an infinite amount of money in Arindale (or elsewhere, I didn't test it in other cities yet) if you have some scrolls with you. I had some scrolls of Summon Undead and I sold one for 135 gold. Now here's the trick : if you have more than 1 scroll and if you sell them one at a time, the amount of scrolls stays the same! So you have infinite scrolls and you have to repeat this procedure until you have the desired amount of money. I raised my money to 50000 just for starters. The place where I did it was in Arindale, in the Warrior's Guild.

Forward Roll: Tap [Forward] twice
Side Roll: Tap [Left] or [Right] twice
Leap Sideways: Press [Left] or [Right] + [Space]
Backflip: [Away] + [Jump]