Buy and sell bitcoin for fiat (or other cryptocurrencies) privately and securely using Bisq's peer-to-peer network and open-source desktop software. No registration required.

https://bisq.network/

Buying Bitcoin is a top priority for most beginners, however doing so without having to bend at the knee of the all seeing KYC exchanges that force you to hand over all your private information is a huge concern for privacy and security reasons.

https://www.athena-alpha.com/how-to-buy-bitcoin-on-bisq/

“Everyone’s very afraid of being hacked, and, unless you understand the underlying security in all of your accounts, you’re going to have trouble not knowing whether these claims by a robocall are real.”

https://www.whatbitcoindid.com/podcast/the-bitcoin-scammer-uncensored

With LNVPN we've build a very simple VPN pay-as-you-go service paid via Bitcoin Lightning. Instead of paying around 5$ every month with your credit card for the privilege of being able to use a VPN service every now and then we provide you with a VPN connection on servers in different countries for one hour for only 10 cents in US$ -- paid via ⚡!

Text: https://lnvpn.net/faq
Get LNVPN: https://lnvpn.net/
Get LNVPN phone numbers: https://lnvpn.net/phone-numbers

We don’t ask for any personal info – not even your email – and we encourage anonymous payments with cash or cryptocurrency. Your privacy is your privacy which is why we don’t log your activity. Our long-term goal is to not even store payment details. We request independent audits of our app and infrastructure to provide transparency and improve our security practices.

Text: https://mullvad.net/en/why-mullvad-vpn
Download: https://mullvad.net/en/download/vpn/

JMP gives you a real phone number that is yours for calling and texting, including group and picture messages, that works from all your devices at once. Because we use the Jabber network, you can use any existing client even if we don't have an official recommendation for your device yet! Get different numbers to give out to friends, to dates, to professional contacts: whatever your needs, JMP helps you protect your privacy by keeping separate parts of your life, separate.

Text & get: https://jmp.chat/

While Bitcoin can support strong privacy, many ways of using it are usually not very private. With a proper understanding of the technology, bitcoin can indeed be used in a very private and anonymous way. As of 2019 most casual enthusiasts of bitcoin believe it is perfectly traceable; this is completely false. Around 2011 most casual enthusiasts believed it is totally private; which is also false. There is some nuance - in certain situations, bitcoin can be very private. But it is not simple to understand, and it takes some time and reading.

Read the full guide here.