There are some great resources here, in the form of ebooks that lays out a lot of the parameters.
Personally I began by using ryeberry spawn bags, once colonated mixed to coir/verm/wc sub that was made using steam sterilization method, added to 2 - 15qt containers. Basically 2 -1lb spawn bags to 1/2 batch sub (batch originally was 8cups verm/1 brick coir without wc.) Goes in each container, layered like lasagna.
I made quite a few LC jars by first isolating on agar. Instead of agar to grain, take agar to mixture of distilled water/karo liquid corn syrup 4% sugars is where you want. Mycelium will grow in the mixture visibly, I use a magnetic stir bar to keep it chopped up. This way creating grain spawn, plates, more lc innoculation etc is super easy, fast, and consistent....