You can certainly learn by sailing often, practicing, reading books asking questions, but it is no substitute for the proper and structural lessons from sailing school. I would take a few ASA courses, it will save time and money in a long run.
I often bumped into people claimed that they hated skiing. The next question I asked is who taught/showed you the first time. They reply, a friend.
A good sailer does not mean that he or she is a good teacher. A capable captain does not mean he or she is a good leader. Just sayin'
Good luck and have fun.
I am old school. Integrity is to do the right thing even when no one is watching.