I just started playing around with machine learning in Python today. It's so fucking amazing, man!
All the concepts that come up when you search for tutorials on YouTube (you know, neural networks, SVM, Linear/Logic regression and all that fun stuff) seem overwhelming at first. I must admit, it took me more than 5 hours just to get everything set up the way it should be but, the end result was so satisfying when it finally worked (after ~100 errors).
If any of you guys want to start, I suggest visiting these YouTube channels:
- https://youtube.com/channel/...
- http://youtube.com/playlist/...

!Rant
Do you guys know any website that challenges​ you into coding little programs (for me, php) to solve problems ?
I mean, it would be to train my skills with actual kind of real world problems, not just hello worlds or simple "how-to" codes.

I signed up to a contest recently and I felt really dumb not to be able to find solutions faster or with more efficiency (FYI : I was ranked 1049/2300 all languages included :( )