Hi Freerunner. I've been lurking on the site for the past week, and have also decided to take on the challenge of a tri next year. I don't have as much experience in the saddle, nor on runs as you as I've been sat on my arse the last 12 years since leaving the Army. But have decided to give myself a target to aim for, ie. a sprint in June next year, followed by an Oly in August if I'm still alive.
I can only swim breaststroke, and have never learnt crawl at all. I went swimming for the first time since school last Saturday (apart from the messing about on hols etc) and surprised myself by managing to swim a mile, all be it in 4 sets of 400 metres, but hey oh, it's a start. I then signed up for adult swim lessons at the same pool and was really nervous about going, not so much fear of swimming, but more embarrassment about being a 36 year old who still doesn't know how to swim. Shouldn't have worried, 1 hour of lessons and I'm managing to swim a length using crawl

another good thing was, there were two other lads getting lessons there who were in training for triathlons too, so we got talking and picked up a lot of tips of em. Signed up for another 5 lessons now, so hopefully be moving on to drills soon and getting better at technique. I can't recommend enough about going to your local pool to find out about lessons. Also, I think some tri clubs hold swim training days, might be worth seeking some near you out. Even if they don't, they might be able to point you in the right direction.
Good luck with your training, and hope to read of your success in the future.