You've got spawn, not spores. Spawn is the equivalent for mushrooms of buying onion sets rather than onion seed. I would google some detailed instructions, because you have to do it right or it doesn't work very well.

Normally people buy a "home mushroom kit" which includes a sterile growing medium, along with instructions suitable for that medium. You've just got the spawn, so you'll have to make your own sterile medium, or buy it ready made.