I started learning nootropics before I learned about steroids.
The two places I would suggest reading at is longecity.org and the subreddit /nootropics.
More one time use nootropics- to point you in the right direction are phenylpiracetam and oxiracetam. Phenylpiracetam is banned by WADA.
The brain fog is mostly from when you first start using noopept. lots of theories that we need to supplement choline to improve outcomes. In general, people here are more than likely to be eating eggs- so that supports the brain. 3 eggs a day for choline and you are g2g
To put it into general terms of substance to start researching-
piracetam- testosterone- the basic one
noopept- trestolone
phenylpiracetam/oxiracetam- tren
Noopept- to reverse alcohol damage
piracetam- to improve language (improves blood flow to the corpus callosum)
phenylipiracetam/oxi- more one time useage, focus, energy. Olympic athletes have used phenyl for the biathlon.