Bike network is okay downtown, with a few connections elsewhere. Generally the biggest problem is connections though. You'll end up street riding inevitably. This can vary from extremely safe to extremely dangerous depending on which road you need to do it on.

Grove St Bikes is a great shop in town. Pretty well stocked and knowledgeable. They do good work, decently fast, and definitely take care of their customers. If you're looking for a new bike they only sell Giant so don't be afraid to shop around.