my dude studied under paul stamets. he's yet to give me my own spores but he's described the process to me a few times.
A/ sterility is paramount! clean surfaces, sterile plastic totes, gloves, face mask etc. there's 5 vectors of contamination, mouth, nose, hands and hair. cover it all.
B/ you need sterile wood chips. do your research on the kind. you can boil old wood chips from proper tree if no fresh cut/wood chipper. spores go onto the wood chips. cover w/ more sterile wood chips.
C/ mycelia grows best at 68F. 'mushrooms' aka the reproductive organ of mycelium [the roots and actual fungus underground] pop up at around 72F. so ideally, keep a room warm enough for mycelium to grow for a minute, becoming strong and then when it's that time, turn up the heat ever so slightly to imitate reproduction time.
D/ you'll wanna be on point. the difference between on point to over the hill can be the difference of a few hours. you'll still get mushrooms but it's apparently an exact science. i have edible mushrooms inoculated in my yard, whole lot easier but no mind enhancement.