to the site & to the sport! In addition to what the others have provided, the primary difference between fly fishing & other methods is the casting. Learn to cast properly. Some feel it's difficult to learn this sport & are intimidated by it, because of the casting techniques involved. That's really not true, but there is a bit more involved compared to casting a spinning or baitcasting rod. It's just another method. Get help if possible from a competent instructor. Video's & books are great, and can be very helpful, but first hand can provide answers then & there if you have questions.
You're at a great age to get started & panfish are an excellent target. That's how many of us got started!
Beyond that, once you learn to cast properly, the rest is the easy part!
Above all however, have fun with it!