Right you have a few options you can do BHO oil, kif hash, water hash all pretty cheap.

Sieving method(kif): buy a silkscreen, available at t-shirt printing shops (the finer the mesh the stronger the hash) personally i think kif hash tastes better than bubble bag hash but isn't as strong.

You put your bud stalks and leaves in the freezer for about half an hour as this helps to snap the trichomes then put a handful over the screen at a time shake and tap until you are left with a brown powder on your work surface then scrape together and wrap in some cellophane then wrap that in paper and soak the paper(making sure the cellophane is sealed so as not to wet the kif) then bake in the oven on a lowish temprature for around ten minutes then take out roll it with a rolling pin and there you have it your own homemade hash.

I would write about the other methods but I'm too stoned and lazy if you like i will add more but thats my favorite method.