urgent : download i2p, freenet, bitmessage, zeronet, a torrent software... with those you are safe what ever they do... I mean it's hardcore lvl to breach the chinese firewall and co :) don't forget trails and co (usb full anonymous softwares). run all on virtual machines or dedicated systems.

you know a lot nutritree already in this domain... but I agree there is always more to know (bisq, openbazzar etc).