There is nothing like track riding. Even if you borrow leathers from a friend and give it ago, I high recommend it to any rider. IMO 1 season of track riding (5+ track days) will improve your riding more than 10 years of street riding. I'm not going to lie, it is expensive. Starting out its not bad, but much more-so as you get quicker and start putting on performance parts/tires. There is no other feeling like going side-by-side (safely of course) with one of your buddies around a 180+ degree corner, knees on the ground.
Don't be a road crayon, pavement does not care how cool you think you look in a t-shirt and shorts.