An adult wanting to get into RC cars, where to start?

[Mrinsignia]

As a kid I always wanted one of those cool expensive remote control cars, but alas my poor mother never had the funds to buy me one.

Fast forward 30 years and I now earn my own pocket money and want to scratch that itch of having a speedy RC car that I can preferably build myself. How do I go about choosing the right car and set up, and where do I learn more about this hobby?