Follow the manufacturers break in instructions that come with the kit.
As far as what you need to get into nitro. I would recommend getting a kit if you can afford it.[link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXL419&P=0]Nitrokit[/link] [link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXL418]Basickit[/link]
For the basics Bump stick,glow driver, fuel, fuel transfer pump, extra rubber bands, extra glow plug, flight instructor and AMA membership. lol
The Tower trainer is a really nice airplane, welcome to the world of Nitro.