Be as clean as possible!
Be patient!
Reasearch, reasearch, reasearch!
Did I mention being as clean as possible….
you can grow some mushrooms in less then ideal conditions, but they grow much better with proper temps and high humidity.
if you are growing for personal use go for it and have fun.
If you are trying to grow commercially and make edibles and such for sale, the best thing I can say is good luck. The market is a mess right now many places just like the weed market. Not saying you can do it just sharing the reality.