CIC online offers a really well collated set of information
But, I get the feeling that, since it's a project funded by several Higher Education Institutes, the project is likely to be pruned. The site isn't as useful as it might be because there's no site-based search facility. For example, I'd like to have researched 'Thermal Mass'. Purely for reference and research purposes you understand.
However this page was the most useful starting point for me : it lists a set of relevant categories
It's best to register (they'll ask you to do that for some resources -not all)