If you want any help, advice or someone to speak to, do shout. I am not a PT but have learned a bit... and i could talk all day about training, plans, nutrition etc!!
My freebie advice now, dont go and do too much too fast, Your long run should not increase by much more than 10% per week. Ideally, you should build for 3 weeks, then have an easy week, then back up again. Plan plan plan, get a routine set, I run 6 days currenty, tuesday hills, wed easy, Thu sprints, fri easy, sat fast short and sunday long slow run. So for example though, your weekly long run plan should go like this
wk1 long run 5k
Wk2 6k
wk3 7k
wk4 5k
wk5 8k
wk6 10k
Longest training run you will need is 20 miles, you could do 22, but no more, and this should be 6 weeks before, maybe 4 weeks...
Get your diet right, look at protien shakes for post-run, get a foam roller for self-massage and consider regular sports massages too.
Dropping the booze was the best thing i ever did, you dont have to give up any foods though!! Just get a good balanced diet, plenty of good carbs and protein (sweet potato, wholemeal pasta, chicken, fish)