To echo what Bluebasser 86 wrote, a club is a good place to start. In a perfect world, you'll find someone who goes fishing every week and doesn't mind someone tagging along, someone who, in fact, kind of likes teaching a novice and passing along some of the stuff they have learned along the way. Should that happen, your learning curve will increase exponentially. Introduce yourself to everyone, chit-chat with everyone and go out of your way to make that happen.
I've got no clue how much gear you've got, but I am assuming you know how to use a bait caster. My advice would be to lay off buying gear for now, until you see how different guys in your club fish. Then get similar gear, to start with. Don't go cheap, that stuff will break on you, always at the wrong time.
I got no idea what neighborhood you live in, but you might want to check out the local forum for your neighborhood. There is a more than decent chance that guys in the club that you're planning on joining post there.
If you have space at your house to practice casting, I'd do that. You can buy practice plugs in various weights or with a modest amount on ingenuity you can create a practice plug in nearly any weight you desire.
Be ready to cover your share of expenses, but don't be a dupe and pay for everything all the time.
If you go to your first club meeting and it is at a place where beer is served, buying a round is a stand-up thing to do.
If you are worried about being the "new guy" - get over it. You aren't the first new guy and you won't be the last "new guy". It really isn't any different than interacting with other kids in the playground when you were a kid only this time it is older boys with bigger toys. Most of the guys, ( really, the vast majority of guys and women) in bass clubs are fun people and you will get entertained.
Another thing to keep in mind is how much are you going to progress. After a couple of years in a local bass club, ( mind you, this was a local club that I was invited in to help start ) I realized that everyone else in the club had the mindset that they were going to put in and spend the day throwing at targets on the bank. There was nothing else left to learn by continuing to go and throw at targets at the bank.
I did the math and found that costs for gas. lodging, meals and so forth were the same for regional tournament organizations as they were for local club tournaments, except you paid a slightly larger entry fee. That is when I got into BFL and, while I was still on speaking terms with all the guys in the club, I didn't fish with them all that often. BFL offered more learning opportunities for me.
I don't know about your situation. Start where you are at and have as much fun as you want to. If you are anywhere close in Missouri, I'll buy you a beer sometime.
p.s. you caught me right after I got home from work and it is beer-thirty my time. Sorry for the rant.