I had a couple of successful batches with the BRF pf tek and I want to go a step further into the grain spawn medium , but there are so many different ways and topics and I have no idea which would be the easiest and most useful to me.I am hoping that somebody from the nexus will share his experience and guide me to the best tek

I've had lots of success with Kungpow's Bulk Mushroom Method

It's pretty forgiving. If you research the "Let's grow mushrooms" series, it fills in the blanks for most of the missing pictures and whatnot from the tek.

Good luck!

i haven't been able to try grains yet, because i cannot afford a pressure cooker,
As a very rewarding next step, i would recommend horse/cow patties and straw,
or even just straw if you don't want to be messy, but patties add a lot of magic!

It's supper easy, do more research, but in summary; just find some dried patties;
crumble them up good, and cut up the straw, mix together in 50/50 or 40/60 ratio;
Pasteurize the substrate; add to a big pot and cover with water and cook at ~170o
(Be sure not to go over 180oF)Let cool and drain over night. Take colonized PFTEK
cakes and birth ina ziplock and crumble them good. Mix evenly with the substrate.

Let this colonize (takes about a week) and expose to light in the fruiting place.

No casing needed, and other mushrooms (like pans) grow well with this method.
iam getting an agar wedge of Panellus stipticus (glowing woodlover) soon. So i've
been learning about using agar and it seems easy also. Keep up the good work!

I will certainly try this in the future but as of now I have a PC and I want to test the grain method

Just finished reading it and I decided to skip the whole casing step because it really seems like a waste of time to me but what I particullary like about the grains is that unlike the BRF there is an almost 100% assured colonization aswell as it being faster,, I am sick of having to wait 2 months for my jars to colonize !