Handsomedan: I would do the following, while technology was still available (not necessarily in this order):
1. learn to fly
2. learn maintenance of motorised objects/electronics/wiring/plumbing etc
3. learn to play guitar
4. learn about agriculture/horticulture/hunting/gathering
5. get over my fear of spiders/snakes/the dark/zombies/vampires/werewolves
6. research the locations of knowledge depositories - i.e. world's most exhaustive libraries etc
7. learn to build
8. stockpile any/all clothing and resources I could ever need in several locations and in several backpacks/transporters for adventuring
9. learn to shoot/maintain a weapon/use a bow/make a bow
10. learn to navigate
Suggest that you do this *before* becoming the last person on Earth. Especially learning to fly. Waiting until then to learn guitar might be a good thing, OTOH.