I was no good at chemistry either, just read read read, and it will click eventually.
What material are you using?
If it is ACRB, I would do a mini A/B at the end to clean it up, unless you want goo.
I have a hard time finding good naphtha in big cans where I am, so I have to use ronsonol lighter fluid in the yellow bottle.
Xylene will pull a full spectrum product, naphtha will pull only white crystals. It depends on what you want.
I have used cybs tek a couple times and it is easy to follow and foolproof if your material is good.
A STB is better for MHRB, as there is less fats in it.
Like BioBoostedSpirit said, don't rush it, it's not going anywhere, your extraction will be more successful the more you understand what is happening and what each step is for. My first extraction worked, but my next ones worked better after more reading and learning what is happening chemically. Read lots of teks as they explain things differently.
Q21q21's tek explains a lot of the chemistry and DMT basics in an easy way. Even if you don't extract this way it's worth a read.
https://wiki.dmt-nexus.m.../Lime_A/B_Extraction_TekGood luck, let us know how it goes!
AcidShard