Self build forums are a great place to chat with other self builders, DIYers and construction professionals. They are excellent for gathering information, asking questions and even for sharing the benefit of your own knowledge and experience.
Here are a few worth visiting.
This is a great forum for self builders with a good community and lots of relevant topics and threads.
A busy forum for self builders and DIYers. There is plenty of detailed discussion and it is frequented by a lot of construction professionals and tradesmen.