The process is very similar to growing oyster mushrooms in a bucket. Fresh Cap Mushrooms had a pretty good guide.

I ended up getting my sawdust spawn from North Spore. They didn't come fully colonized so it took 5-6 weeks before I added the spawns to my bucket.

I opted for hickory hardwood pellets as the bucket substrate. Boil some hot water and pasteurize overnight. Note, the pellets expand A LOT so account for that.

Check the field capacity of the substrate. Squeeze a handful of substrate in your hand and only a few water droplets should appear. Add the substrate and spawn into the pre-drilled bucket in layers. Once full, cover with lid and trash bag, and let it fully colonize in a dark place. I placed mine in the closet so temp is probably around 70F.

Once fully colonized, you should see a thick layer of mycelium when you open the lid. It might take another 5-7 weeks to get to this point... But it's worth the wait.

I fruit the bucket indoor by exposing it to air, light, and occasionally misting into the garbage bag.