[nnq]

A: Yes, I think so. I'm self thought guy myself, at least, when it comes to programming, and I really enjoyed watching the relational algebra videos and then the SQL ones (never got to the modelling part though, got all my learning time sucked by a big work project)... go through them at 1.5x or 2x speed and you won't regret it, at least if you had no encounter with relational algebra before, as it feels good to know there's some nice and simple math behind SQL :) (though now I want even more to shoot the guy that invented SQL's ugly syntax and all the database implementors that piled tons of "semi-compatible" shit on top...)