Here are a list of free resources which can be used to help improve your privacy and security online.

ProtonMail - a Swiss based email service which offers excellent privacy. Basic accounts are free. A VPN, calendar and encrypted storage service are also available, but not free.

LetsEncypt - a free, recurring and short dated (90 day) SSL cert. If you have a website, you should have an SSL certificate, so your visitors can access it via HTTPS. This website uses LetsEncrypt.

PiHole - a free tool which is run on a raspberry pi (or other server) and sinkholes ad traffic and other trackers so they can't clog up your network.