Los Techies is a blog maintained by a number of contributors who share and discuss various technical ideas. I happen to have met a few of the folks who contribute there and they seem like pretty okay people.
At any rate, I was perusing some blog posts there this morning when I came across a couple of e-books they have. One talks about the SOLID principles and the other discusses refactoring. Both are important skills to be familiar with as a programmer. I personally like to read various sources on both of these topics when I get a chance since I like to continuously improve those skill sets. I encourage you to do the same.