1. Learn to use a host-file to evade dependency on external DNS.
2. Choose your DNS with care. Every DNS yields different results.
3. run your own DNS.
4. Comprehend what a phone is for. Comprehend what a smart phone is: a tracking device.
5. Degoogle your phone.
6. Evade playstore/appstore like the black death.
7. use frontends as much as possible: https://www.privacytools.io/privacy-frontends store it as a bookmark, and take your pick. Also: libredirect comes in very handy.
8. resist fingerprinting and other tracking methods: Eff.org is a valuable resource.
9. Use a NOLOGS only VPN like Mullvad. Change your exit server often during the day. Remember, that your research is impacted by region and DNS choice.
10. Run your stuff inside a sandbox and firejail.
11. If a site breaks, it probably is tracking you. Try to find an alternate venue for information.
12. EU sites must adhere to free access without cookies. There is no legitimate interest. Sites who do not offer free access, are in violation of the law: send complaint with site-admin and then authorities.
13. Analyze your own behavior. Use a linux machine instead of your phone/ windows/mac as much as possible. Separate your normal from your Digitial Soldier (DS)-life.
14. Instead of calling, visit. Instead of apping, visit.
15. Use Tor, VPN, I2P, Loki as alternating options.
16. explore p2p e2e metadata surpressing communication solutions. Yes I know, everyone is on facebook en whatsapp. There once was a time this was not so.

All in all, be conscious about yourself, what you want to achieve, and use the tools connected with it, and be aware of how to split your activities.