Just check these videos, follow his instructions and you will be good to go.
Plus with time you will be able to produce your own inoculant.
For example just to give you an idea. If you have pure spores you could use those to make a mother spawn with with a pasteurised media( bird seed, rye, barley) and with that you could make more jars and it goes up to 300 and from those you could use the seeds to inoculate rice cakes… It’s a bit of a.scam when it comes to spores because most people don’t know about what I just explained above. Use the syringe once or one for every crop. Instead a syringe could.be used to inoculate an agar petri dish and so on
Hope this brings a bit of light 
and is helpful