Added a link to Paul Strikwerda’s Blog.
There are a bunch of very well written articles here (well, on Paul’s site, obviously not on this site!) about the daily nuts and bolts of VO work, like landing a freelance job, figuring out rates, taking care of your voice, etc. But there are also a lot of articles more in the line of just improving yourself in general, and thereby improving you VO skills, as well as your life.
You can quite enjoyably drop an hour here before you know what happened.