It's pretty easy as long as you have somewhere warm enough and quiet enough to keep the bags (just need room temp). I did it all in my basement. But the way I did it it's pretty easy. It's pretty much inject, leave it for a couple weeks, and cut a hole in the bag and wait. Much less work and investment then growing plants. Main thing is cleaning a room before injecting. This was my 1st attempt at it
I did almost all of it in my bedroom and bathroom. It's pretty easy as long as you take care with cleanliness. I used my bathroom for the clean stuff as it's the smallest room and I can spray everything with 70%. A small SAB completed it.
This bag of tidal wave that was contaminated months ago is just sitting open in my dirty 50* garage and it's been kicking out a little mushroom every day or 2 out of the side that's still white
Good luck. Not a lot of equipment needed if you go the bags and syringes route. Don't think it would work below the ground though
But it only takes about a shoebox worth of space on a shelf for 60 days for 2 bags. Doesn't smell at all. You can also get more into it and keep the genetics forever like @Bill.de.Cat is doing in his thread. He's kinda doing like the next step up from my basic grow 
I'm thinking I could possibly do it lol, looking at the UK law regarding buying spores and were to get some, sounds easy enough to do, il keep ya postedGood luck. Not a lot of equipment needed if you go the bags and syringes route. Don't think it would work below the ground though
