deep web , need help which method is safer

i want to start browsing on the deep web and i have a mac i don't know if i should set it up through virtual box or bootable USB, which will be safer , i want to install Kali-Linux and start up tor on that. if there is a better way can you please help and what vpn services that are free can i use on Linux,if i do start it by virtual box is there advanced ways where there is no way they can track me,how do i close all the bridge methods ? or bootable USB method.is there alternatavie ways which i can approach this situation if there is please help.