I can't remember a lot of the details of what he talks about, since I didn't listen to it all that much, but it involves a lot of stuff like buying thing with cash, buying computers (and electronic devices in general) at garage sales so even if someone hacks the computer, they won't know who's using it, burner phones, fake names, fake phone numbers, having your car owned by a corporation (?), using a P.O. box for your driver's license, disposable email addresses, social engineering (calling up places and tricking them into accepting your fake name or your shell-corporation-owned credit card number), VPNs, privacy software, password managers, and so on.
Some of it could be used for nefarious purposes, but he helps people hide from criminals or the media or other nefarious entities, such as movie stars who are trying to dodge the paparazzi, people in witness protection, people hiding from vindictive exes, and similar things.