I probably have (timewise) some advantages compared to you:

I can "book" some of my invested online-time as "learning/trying to improve my english": today I learned the following words (I had to look them up in my diccionary and a write them down to memorize): "JERK" (that was heavy ...), "discretionary", "loopholes", "timely-ness"; and the folling sayings: "tipp off", "let the dogs out of the kennel", "reinforce the barbed-wire", "doomed to failure", "sneaking them in").

And from my own experience I "learned to learn" by practicing with stuff I am interested in.