Welcome back to the sport! What did you buy and where do you plan to ride? There is a wealth of information on this site and others like it, generally less biased than commercial sites. Most questions you have probably have been asked before, but if not people are usually willing to help.
Rule number 1 is have fun, if that is a problem sell your sled. Try to keep your head on straight too, that helps with rule #1 also.
By the way, if you are from Brooks you may not be familiar with this. Those tall skinny things found elsewhere are called trees, try NOT to hit them.