I write regularly for the British magazine 'French Property News' (Archant Publishing Group) on issues to do with living, working and buying property in France. Available on subsription from the publishers.
The www.totalfrance.com forum is another useful source of information and discussion, where I also respond to questions posed by readers. I also contribute to www.livingfrance.com and www.frenchentree.com .
For those interested in working in France, especially under the new-self employed regime known as auto-entrepreneur, you can consult the lively discussion forum www.auto-entrepreneur.fr . The site has useful links to other sources of information (in French).