That is a difficult question to answer. It depends:
build from a kit, from spare parts, from scratch?
are you good at following instructions?
are you mechanically inclined?
are you patient?
are you careful?

The only RC's I've ever put together were old electrics back in the early tamiya days. I have completely dissambled and reassembled both my t-maxx and rusty. So I guess I have a bit of experince, but no experience with modern out of the box kits, so my opinion really isn't all that valid anyway.