The earlier suggestion for the c700 is good. That's what I started out with in my darkroom. It's very compact and you can lift the whole setup by one hand. Which is nice if you plan on schlepping it to the bathroom every time. I gave mine away on apug while ago, but they are not too expensive and quite common. Bulbs are super cheap too.

If you take a class or go rent a darkroom, your most likely to find the lpl 6700 or 7700 models or the like. They are very good and keep decent alignment and take a bit of abuse by kids starting out on them. But they are heavier and take up more space.