Well, you want to build a radio controlled model truck. This how to will get you started in the fun world of RC hobbies.
RESEARCH: There are hundreds of RC truck kits out there, so use the power of the internet and start getting ideas of what you want in a RC truck. Check out the local RC hobby shop; at least for the first time, do not go to purchase, go to learn.
CLUB MEMBERS: At most RC hobby shops you can find information about RC clubs. Talk to some of those members about which models are the best for beginner, intermediate and advanced users.