How to start learning park in really flat country

Hello,

first of all, you have nice site and community guys (although I found that i am kinda gaper here xD)!

So i am 23 years old, living in a country without mountains and going to ski for 1 week per year (like 12 winters i think). I tried twin tips just last year (and skipped 2 winters before because of studies). Until than i was doing only slalom because no one in my family does anything else and my balls were to small to try things alone. Soooooo after trying twin tips i decided that i really want to get better in park and just have more fun near the slope or in the powder (i will go to Livigno, Italy for one week this year). And i want to ask you some questions (i read your forum before and tried to google about this, but just want to be sure):

1. I want to buy volkl bridge (2012, used). Thats ok? I read a ton of reviews, people are saying that they are very nice :D
2. Where to start (even in my flat country there are some mountains (300m high max), we even have several lifts. So there are some kickers, rails, boxes)? I found on your forum, that i should learn 180, 360, switches first (i can do something like 180 and simple switch atm), but maybe there is some good sites, videos with explanations? I have done trials riding and other technical sports before, so i really know how important is to get the basics right.
3. What exercises should i do to get in the right shape (i jog and bike a lot, do exercises with bodyweight daily).

I am really looking forward to your replies!