I'm sure your coaching skills will be sought after here...starting with:-
I run an informal training session for my club each Thursday...at the moment it's either hillwork or speed work. I don't have any formal qualifications and just run the session so as to have some kind of structured training once a week. We do not have access to a running track. I have mixed ability group which I try to keep together(ish) for these sessions to create club spirit.
Tomorrow it's a speed session...any fresh ideas I could "borrow"?
I'm doing London too as are quite as few forumites. Check out the marathon thread.