I grow shrroms too... and I'm not analy sterile... I might loose a jar or 2 ina batch... but not recently...
before you start learning how to grow these little shits (sorry I'm still comming down from ingesting a few grams earlier tonight, and they were a little rough on me tonight), look up how to make a glove box... now go to the shop and buy a large plastic tub you can make one out of, get some latex gloves for handleing things outside of the box, also some rubber gloves to ductape into your glovebox, while at the pharmacy to get the latex gloves, get some 3% peroxide, and the highest proof alcohol they have for wiping down syringes in between innoculating jars. Now all you still need is some Vermiculite and perlite from the nursery down the road... and maybe a brick of coco coir (coco peat)...
NOW you are ready to start following just about any TEK online, as yo umade the needed commitment and got the right tools... (Oh yeah you probably want to get a presure cooker pot - I know PF tek can be done without, but I wouldn't - In fact I preffer using rye or popcorn... depending on which I can find when going to the shop... rye is quite scarce here, only available from health shops - (PS it has to be organic rye or it will likely be covered in fungicide).
Good luck.