I like being up-to-date on topics that interest me. The main tool I use to do that is RSS feeds. I use Feedly to subscribe to RSS feeds of information sources that I want to follow (mostly blogs).
While Feedly is available via web and mobile apps, I use the Android app almost exclusively. I might use the web version to organize my subscriptions from time to time, but I do the actual reading on my Nexus 5.
I made it a habit to catch up on my Feedly Must Read list as a filler, whenever I have “down time” (commute, waiting for something, coffee break, etc.). Much better than burning time on Facebook and such, in my opinion 🙂 . I religiously clear out my Must Read queue at least once a week (I estimate it’s currently around 1,200 items per week).
This post lists my favorite RSS feeds, as of December 2014.