Having just been through this rather nervous stage with two kittens, then here goes:-
Yes, kitten food, our vet recommended the branded kitten food which is high in moisture content. At 8 weeks the kitten will probably eat half a 'half size' cat food tin a day. Offer water, but don't be too worried if he doesn't drink given the water content of the kitten food.
Litter - the vet recommended wood-based litter, as the gravelly stuff is more dangerous should they eat(!) it.
Jabs - first one is at 8-9 weeks, then a booster 3 weeks after. Our vet recommended the full works including leukemia, which was around 50 UK pounds per kitten.
Also, I'm not letting my kitties out till they've been spayed at about 6 months, but you may want to investigate ID tagging whereby for 20 quid you get a rice-grain-sized ID chip injected into your kitten's neck.
And, of, course, a big flat pooper-scooper
Good luck,