Ask HN: How to get into Data Science as a hobby?

I've been programming for about 4 years now (full-stack web) and had a couple previous years doing Database related work (PLSQL, Oracle apps).

After taking a few coursera classes on the subject I'm don't know where to turn now. I had a few classes in college which touched on this (data mining, stats, etc.) but never had any real world projects.

I'm curious..

1. Where can I find side projects to work on which I could apply my beginner knowledge of the field. (end goal to learn more with practical work)

2. How can I use my background in web development to help advance in this field?

Any advice is appreciated