Welcome to the world of model airplanes!!

Not an expert, but I believe at this point you need to research a little, and decide about the type of propulsion that appeals more to you; electrical motors or fuel engines.

Check these threads:

http://www.rcuniverse.com/forum/m_8068457/tm.htm

http://www.rcuniverse.com/forum/m_8108811/tm.htm

http://www.rcuniverse.com/forum/m_8070492/tm.htm

Regards!!