The only way to learn is to actually do it. This is in regards to shooting, gear, etc. You won't realize what gear you need (are missing) until you shoot a match. You won't learn what you need to improve on until you shoot a match. Watching others do it, you won't learn any of this stuff. We all started somewhere and even when learning, well you're always learning but even when starting out, people were always eager to help out. Good RO's will be a bit more patient, other shooters will help you along the way etc.
Seriously, don't think about it. Just go for it, you'll have a blast.
On that note I'm heading out the door to go to JC Steel!