Check out my way (lazy) of growing mushrooms. I'll provide updates in a couple of weeks on what the growth looks like. Please see below on a spawn that you can use and the greenhouse that you may need during the fruiting process. Oyster mushrooms are the easiest to grow so I suggest starting with those. Your results may vary.

Spawn/Spores: http://amzn.to/2wDT5UY
Greenhouse: http://amzn.to/2vJRttI
Greenhouse is not necessary if you have a plastic cover/bag to help keep the humidity high. It just makes things easier for me.