Just be careful with the wheelies. They are fun and exciting but dangerous. I am sure you also came accross some videos on youtube of people losing control of their bikes after doing wheelies. They are caused by the front wheel not lining up perfectly with the rear wheel when the bike comes down. Very scray. Very expensive to fix.
My advice is to take babysteps and learn the bike a bit more before getting yourself hurt. Make sure you have full coverage insurance or a big enough bank account.