SFS who comes on here sells worm count kits, so he'll be along to shortly to explain how that works.
Jabs - i collect form the vet Noramectin or Doramectin or you can buy Dectomax over the counter at the ag store think its 1ml per 33kg of pig! Read the label. Worming jabs are done sub-cutaneous which means just underneath the skin, best place is just behind the ear and out a couple of inches above shoulder.
You can get the vet to show you first time but it will be a dear do (see other topic on here) or if you have a breeder near you if asked they who might come and show you.
If they're fatteners remember they can't go to the butchers for 28 days after jabbing. And remember to enter all in your meds records.
HTh
mandy