[After posting this stuff in the morning I added a few more links in the evening that I missed during the first run due to some browser tabs I had overlooked]
In the past couple of weeks I had a lot of fun reading through the various postings at the OD&D discussion boards (and I'm still going strong). I find the comments there very helpful in getting into the right mindset for reading the little brown books and to get sensitive about the finer formulations used in the rules.