My first DD was potty trained before 2.

We are now going on DAY 2 for my second daughter and I was just wondering how long before she catches on and starts peeing in the potty. She turned 2 this month.
Also - right now she is strictly in underwear, socks and the pants come on and off because I have a space heater on - I refuse to buy pull ups this time around - they didn't work for my daughter and we spent so much money on them.

So - we will be using diapers when go out and at night.

Any tricks or rewards that worked for you? I actually think my first DD showed more interest in the potty than my 2nd - but I figured I would give it a shot - and get rid of those diapers.
TIA