Welcome to the forum! Always good to see new people joining. You will want to find out from you local Ag department/vet what diseases are predominant in your area before you go off and buy a bunch of expensive vaccines; then follow your vets advice on the best time to vaccinate them. Different vaccines are best done at different times (eg at weaning or prior to joining etc..)
As far as worming is concerned, you would generally only do it if your animals look wormy ie, loose, moth eaten or in the case of heartworm, a hacking cough and dispondent; I am not a huge fan of using chemicals unnecessarily; I prefer to use a salt lick containing sulphur, seaweed meal, and copper sulphate; do look up a recipe. I would recommend a book called Helathy Cattle Naturally by Pat Coleby.