Fall Classes

I'm taking Stanford Online classes in Computer Science this "fall".  I'm taking the database class (db-class.com), the machine learning class (ml-class.com), and the artificial intelligence (AI) class (ai-class.com).  These are all high quality classes, and I'm happy for the opportunity to take them.  With both machine learning and databases, I'm taking the advanced track with homeworks and assignments.  With the AI class, I'm just taking the lectures, the Basic version, since I need time to do other things.  AI is useful for stuff I might do, and there are many algorithms that I haven't seen before; however, machine learning is more relevant.  Learning some new algorithms from AI shouldn't be too challenging since I'm more of an algorithm/theory person anyhow.  Learning about databases in more depth will be helpful and is something that I might not do on my own.  So far, the machine learning class isn't very challenging since it reviewed ordinary least squares, which I already know about.  The database class, on the other hand, is challenging since I'm not an expert on SQL (Standard Query Language), and writing queries can be tricky.