I'm glad this is helping, Ian. Don't be afraid to comment! That is the best way to get started here.You are doing the right thing by reading and reading. But on the other hand - things move fast here. Just do a 1 paragraph post to say you are here and learning in case anyone looks.

Don't use the introduceyourself tag yet - save it until you really are ready to come alive on your blog.

I too have fears about posting here - you are not alone!