If you want a bit more info / examples of the sort of stuff you'd be reading, take a look here: Judith Beck Blog
This blog is actually part of the official Judith Beck site.
There are also some newsletters (click on the links on the page): Newsletters
What sort of phone have you got? If you've got an iPhone, quite a few of us have downloaded 100 Days of Weight Loss from the AppStore - think it's around £3.49.
ETA - 100 Days isn't Beck - but it's a daily workbook thing that helps you tackle the emotional side to overeating - I find it goes quite nicely with Beck.