Python is a great language to learn as your first language. I have ADD, so I feel you on not being able to focus / do something for more than 30 minutes. Something that I learned though, is that if that's all you can do, then that's fine. Do 30min of programming, play warframe for 15-30min. Rinse repeat. Its not as efficient as longer sessions, but some of us just aren't built to do things for long periods. Do what you can here and there, and soon enough you'll realize you're becoming fluent in the language.

Once you have the money to, you might try looking into online therapy. And if I read your post right, you're on social security, which means some places might charge you either less than normal or nothing.