Of the various books that get offered to me for review, the best so far in terms of helpful advice for people working at home has been Undress for Success, by Kate Lister and Tom Harnish.
Late in 2009 I reviewed the book here in a video.
The authors also have a website with many resources for people working at home or thinking about it, and their blog provides regular updates on various matters of interest.
The site has just had a makeover. I encourage you to check it out.