1. Pick something you want to learn. Let's use Photoshop as an example.
2. Spend an hour finding all of the best resources on the web for learning Photoshop. Tutorials, videos, online classes, forums. Pick a few that best match your learning style.
3. Lock yourself in a room completely focused on walking through that material, doing lots of exercises along the way.
4. Repeat for 50 hours.

And, like magic, soon enough you'll be proficient with Photoshop.

I just did this with iOS game programming, and after about 10 hours my little men are running around the screen, bouncing off the walls, and ready for more action. It was surprisingly easy.

We've all grown up with the expectation that "learning" has to be done in a classroom with other students, an expert teacher in front of a whiteboard, and you need to pay money to get certified that you know that thing.

But it is all out there in the open, mostly free, open to anyone who wants to learn.