I know nothing about survival. I live in England and have probably made a load of bad decisions, but here's what I'd do:
Day 1: Print absolutely everything survival related I could. Laminate it. Hole-punch, ring binder folder, that shit is my bible. Aim to get as much as I possibly can.
Day 2: Check the net for local houses, places that are stated to have green energy, there are a few places I sort've know about that are almost tourist attractions because of their green-ness. I'd steal a nice car and head there to live.
Day 3: Take a van and make a few trips to the local supermarkets, enjoy all the exotic fruit 'n' veg whilst I can, meats etc. I would also stop off at the fishing/hunting supplies shop, pick up as much as I could, including any shotguns. (I can shoot fairly decently, good for birds etc.)
Day 4: Go down the streets of nearby houses filling up baths with water that I would take back in drums back to the 'base' over the next few weeks. Lots of clean water can't be a bad thing.
Day 5: Diesel, other survival gear, several sets of strong walking boots, everything that looks like it might be useful at some point, load it up.
I'd also get seeds etc and start a vegetable garden.
I'd spend the next few weeks hoarding supplies and learning as much as I could, making sure I got books on stuff too.
My mission would be to travel and see as many land marks as I could. I'd be limited to England/Wales/Scotland, but there's thousands of beautiful places to explore, I've always been a butterfly enthusiast - but I've never seen a purple emperor (at least when I was in England) and I would like to be able to take the time to properly look. I'd read a lot, which I think would be fantastic, and I'd be able to do it whilst sitting in my Aston Martin DB7 looking over the white cliffs of Dover.
Petrol going bad would be a pisser, but by that point I'd probably be a lot more used to surviving, so travelling on a mountain bike wouldn't be too bad.