Blondihacks wrote an in-depth tutorial on how to make PCBs made at home using pre-sensatived photo-PCBs. We especially liked the board design optimization for home etching tips. Wide traces, big vias, and using a ground plane are all strategies we use to get good DIY photo-transfer PCBs too.
DIY etching is the fastest way to get your prototypes made, but if you find it too much of a hassle there are lots of cheap PCB fab houses. You can check out our tutorial on how to get your PCBs manufactured.