I think Fine Home Building magazine is a "must read" for those who want to improve their construction and remodeling skills. It is oriented mainly toward professionals and serious DIY people, with a focus toward technical content. 
The magazine comes out every other month, with some additional special issues. It's not cheap, but I think well worth it, since I keep these as reference materials for future use. My favorite features are those dealing with design priciples and very detailed how-to articles. The publisher, Taunton Press, has a number of other high quality books on building and design.
The magazine's forum Breaktime, is a good spot to get advice from people with a lot of know-how. It is not the place where you ask "How do I fix a leaky faucet?" (save those for DIY Network) but where you might get input on using PEX vs copper for your plumbing system.
A point of note: I am not getting paid for blogging about any of these resources. These are the ones that I personally recommend, because they have been of good help to me. I believe they were well worth the time / cost to help me with the remodel.
