Master the standard library of your programming language.
I saw a gap in the programming world. Most languages have an extensive standard library and core that a lot of programmers are missing out on. I was doing things the long way because I just didn't know the standard library had something built in.
The first book is well under way with 16 chapters done across 189 pages.
I'm giving Leanpub a go for building the first book, so it'll be available as PDF, ePub, and Mobi, for reading on pretty much everything. I even hear the PDF can be fed to Lulu to make a pretty mean hardcopy.
There's a blog. It has words, and can keep you up to date.
You might also consider following @TheStdLib on Twitter for those updates that just don't make sense for a full email blast.