A suggestion for you today.
If you desire to learn something for which you would love to take a class, but cannot afford to do so... seek out a local club that deals with your subject. You can probably attend as a guest for at least a few meetings to see if you want to commit... and then, it's likely the membership dues are far more manageable than tuition, fees, and books for almost any given class you could attend.
I've been able to attend two out of the last three Garden Club meetings and they are wonderful. They are a group of older ladies who are each a wealth of knowledge about plants and gardening. I've learned so much each time and come away with cuttings and/or actual potted plants. Most recently I was given two potted plants: a night flowering cereus and a pot with some vick's plants (plectranthus tomentosa) and easter lilies in it! ^_^
Some reading on the Vick's plant (and toothache plant, which i hope to grow from seed soon).