Way to go. I started my web dev journey a couple of months ago, and I haven't regretted it. You've definitely got your hands full with a lot though.
And I really don't think buying Udemy courses is wrong despite a lot of free content out there. The thing is, with an organized udemy course, you have a one-stop for most of what you'll need especially since the creators of these courses keep updating them. Keeping track of these never-ending updates in the "dev" with free content or with youtube videos can become a real work at times.
I'm not quite sure, I was convinced Python would be the most complicated and hardest skill to master and yet, this course is only 35 hours long, but we'll see.
You'll get to see that python is actually quite easier compared to Java or even JS when you get started. Just my opinion though, but I think a lot will agree with me.