HTC has expanded their offering of support resources so you can make the most of your Hero phone! You should check out their product support page for the Hero - it has dozens of frequently asked questions and good answers.
They've also opened a new discussion forum specific to the Hero on the Sprint network. While there's not much traffic there yet, and I haven't seen any direct information from HTC, it's another avenue to find out ways to make your wireless experience the best it can be! We've added a widget to the Overview page showing the last five posts from the HTC forum, so you can see what's going on over there too.