I have a bike and know how to repair it, so if there are materials availiable in case of an emergency, I would have a means of transport that doesn't rely on electricity or gas. I'm a bit out of shape ATM but that's a problem that would fix itself if I "had to" rely on a bike to get around.

I know how to build fires, chop and dry wood, sharpen an axe properly and there are lots of trees around these parts, so with a little extra work I would be able to stay warm and cook food. I think I even still have my grandpa's old axe here somewhere.

My grandparents taught me how to preserve stuff properly; drying, pickling, smoking and canning raw foods, like fruit, veggies, fish, meat and mushrooms. I know how to grow and store potatoes properly - the only thing I'd need here would be a bit of fertile land and a cellar, but in case of a world wide disaster like that, it would probably not be that hard to find people willing to turn their lawn into a field and toss out obsolete electronics out of their cellar to store food there instead.

I know how to fish and I'm not that bad with a bow either (medieval enthusiast here), and I know how to quickly kill and properly prepare chickens, ducks and rabbits. No actual experience with bigger animals yet, but the basics are there and I'm not icky about getting my hands dirty. I know how to skin rabbits too, but I have not yet tried to make leather / pelts.

I am somwehat okay at identifying wild mushrooms, but not good enough to be 100% certain all the time, so that's a point where I needed to be cautious.

There are plenty of small rivers around these parts, so drinking water might not be an issue, provided that stuff is actually safe to drink. Boiling doesn't always remove all the nasty stuff, and I only have a very vague idea of how to build filters out of natural materials, so I would either need to experiment around, rely on the knowledge of others, or look it up on the then nonexistent internet.

I would definitely miss the internet and since I'm a total videogame nerd as well, it would suck big time to lose that hobby permanently, but as for sheer survival, I'm fairly certain I would make it for a while, especially if I could find other people to teach them what I know and build a small community. I can't do ALL of the things mentioned above all on my own every single day for weeks or months on end, but if the knowledge is there and there are people willing to learn and do their share, I'm positive it would work out after a while.

The biggest issues would probably be medicine and other people: My knowledge about natural medicine is VERY limited - birch bark for pain and the like, but I wouldn't be able to treat more serious injuries or diseases properly on my own. And since people as a whole tend to be assholes when presented with disastrous conditions, I would be very cautious about whom to trust. A lot of doomsday preppers seem to have the only plan of hoarding weapons and food and shooting others when running low on supplies so they can take other people's stuff, and that's nothing I would want to have to deal with.

PS: Just to mention it; I live in a somewhat rural area anyway. Plenty of people here still keep their own chickens, live in houses that still have wood stoves and "old timey" fireplaces, grow their own veggies and fruit, and I know at least two families around these parts that still have horse-drawn carriages and trained shirehorses (they offer rides for a fee for events, parties and the like). A lot of older folks here grew up on farms and have the respective knowledge still. We even have a "traditional" blacksmith and farrier here, as well as a hunting club with a couple dozen members. The knowledge of how to survive without elctricity is definitely there, a lot of non-electric tools as well, and everything else is just a matter of time and cooperation.

Medicine would still be an issue tho. (Insulin has been mentoined a couple of times already - you can't just substitute traditional natural folk medicine for everything)