I suggest that you sign up at the gosailingapp.com website, create a profile, and look for opportunities to sail.
101 teaches you the theory and practice of how to make a sailboat stop and go. 103 teaches you how to dock, how to anchor and a little bit about systems. 104 teaches you more about systems, and takes you on an overnight cruise. NONE of these courses make you a competent sailor. The best way to get better at sailing is to get experience sailing with other sailors.