No kits. I buy mushrom spores suspended in a water syringe solution (from Sporeworks .com which is legal in the US for microscopic viewing) I then use different substrates packed inot small mason jars as their nutrients (brown rice flour or horse crap or bird seed, or rye , etc, etc) Everything must be sterilized, then ya inoculate the spores into the medium and let them germinate in the dark. Once they turn all fuzzy white (mycelium) your put them in a high humidity terrarium (95-99% rH) and in about 4 days they shoot up and are ready for harvest. Dry them up in a few days in front of a fan or use a dehydrator and its fukn party time. The Shroomery is a great forum site for info. Potency ? it varies, amongst different strains and the grow medium ya use. I always test my batches first and "hero dose" before sharing with others as I don't like people to have a bad trip. I also like to micro dose as well (1/4-1/2 gram) which keeps me feeling great and I can still go about my daily routines. But when I want to cross over into level 5 ( sacred geometry stuff and into different realms, aka loss of ego) usually 4-5 grams gets me there. l like the Cubensis strains because they are very easy to grow and they give ya a nice cruise, not all speedy and freaky paranoia. Mellow and enjoyable is what I like. Shroons are the greatest anti-depressant in the world, but finding your own specific dose is the key.