Anyone running this?

Just signed up this week, my current fitness equals zero.

I trained semi-professionally from 1995-2014 until I retired. I literally have not trained since my last official training session and match in May 2014. I'm using the simple beginners marathon training schedule on the official website, 3 mile run today which was actually a breeze albeit at a really slow pace (10 minute miles).

Anyone got any tips?