http://i4pd4zpyhrojnyx5l3d2siauy4almteocqow4bp2lqxyocrfy6prycad.onion/resources/read/csrc-bulletin-1-en.html
Some OpSec practices include wearing gloves and masks, using different shoes, measures to avoid leaving DNA, black bloc clothing, using Tails for anonymous Internet access, and so on. OpSec is on the level of the action or project. These practices can be taught, but ultimately only the people doing a specific project together need to agree on which OpSec practices to use.