Yet another self taught sailor here. I had help on learning to set and recover a spinnaker set on a pole [ thanks Jim the schuss ] and on crossing the English channel at the start of a seven year cruise on my first big boat [ thanks Jack ]
Most of it is common sense like others say. However if you can get an experienced racing sailor to come out with you one day and go through how to get the most out of your boat and sails, go for it. Watching him or her improving the set of your sails and getting the most out of her upwind will be enlightening.
Me, I usually just hang the rags on the sticks and wait till I get there with george steering while I make a nice drink.