We trained DD1 at 22 months, though we'd been putting her on the loo for poos from about 12 months, since she goes bright red in the face so had a few seconds warning - my mum suggested it & within a few days she was happy with the change - after all, who wants to sit in their own poo.
She was in real nappies & was going for ages without peeing & then soaking through two layers of filling - so it was either potty train her or start using disposables. We explained she was a big & clever girl and asked her if she wanted to go on the big loo like mummy & daddy - both of whom she'd been watching intently for some time in the act.
She was too young to get excited / understand star charts so we went for instant rewards - 1 chocolate button for a wee in the potty (telling us she needed to go to start with, even if she didn't make it) and 3 for poo - the idea that she could have chocolate at any time of the day or night when she'd done this really concentrated the mind.
Had a chart for ourselves so we could see when we were making progress - it took 4 days for the message to really sink in, so it's good to remind yourself that she's making progress - after all it's a new skill - could you learn to drive / roller skate in 3 days?
Go & buy loads of pants - with her to help chose if you like - we got through about 30 pairs in the first week. Get a 'Piddle Pad' for the car to protect her car seat so you don't feel tempted to put her in a nappy for car journies - once you're out of nappies stick with knickers except at night otherwise you'll confuse her as to when she can & can't pee in her pants.
Buy a 'swimsuit' waterproof bag - M&S do one for a fiver, for putting wet pants & clothes in as you will get accidents for a couple of months at this age when she's busy / tired. But that's still better than changing nappies.
Avoid pull-ups - you lie down on your back like a baby for nappies. Get a throne / chair potty (they have them in Mothercare) rather than a traditional potty, since they don't tend to skid away from your bum when you're trying to sit down quickly. Also get a Potette Plus (from Boots or Mothercare) - it's a wonderful folding potty with bags (with an absorbant pad in the bottom) that can be thrown away, which is also an insert for toilets. It takes up very little space & can be taken everywhere - very useful when out & about, in the car, in shopping centres (where loos tend to be very spaced out).
Give up for a few weeks if she gets upset / doesn't get it after a week of explaining. Good luck & I'd say go for it in this fine weather when you can spend a lot of time outside with a potty & not worry about your flooring.