Everyone learns differently, so you are going to get a lot of different types of suggestions. I learned physics through a mix of the standard academic route an

Everyone learns differently, so you are going to get a lot of different types of suggestions. I learned physics through a mix of the standard academic route and some autodidactic explorations, so I'm not particularly married to the idea of learning things 'in the proper order'. On the other hand, I've experienced what it is like to learn a part of something but to have a hole in your knowledge because you learned it out of the expected order. Filling those holes is helpful, but just because you skipped something doesn't mean you can't learn it later. I would suggest to pick up a used copy of Modern Physics by Serway Moses and Moyer. You should be able to find an old edition for about $20. Read through it once first, don't try to work the problems, just absorb the concepts. This will give you a basic map of the idea space, so you know what you'll need to learn. Then find a part which you find fascinating and try some of the problems. You'll likely find you'll be missing some tools and then you'll need to go back and learn some things, but at least you will know what you need it for, and your interest will fuel your ability to work through the problems.