ProtonVPN, IVPN, Mullvad or Windscribe. Stay with the ones that are independent. Stay away from the ones with sketchy parent companies such as Express On and Private Internet Access.
It's also worth looking into a project called Gluetun!
I'm fresh off the school bench myself, and work is now requiring us to take RHCSA, RHCE and Terraform certs. As we are consultants this is the only "proof" customers will trust when they choose us for various jobs.
So far so good though, starting with RHCSA and it's really good practice, especially for getting to know the ins and outs of the Linux system(RHEL). The learning material (the official stuff from red hat) is also very thoughtful, with theory, quizzes, guides and labs.
Sorry, it was a badly formatted question I wrote whilst commuting earlier.. I ended up looking the project up to look into the details, seems very promising! I'll soon be booting Linux on a work laptop and think secureblue might be a very strong contender for this 💪
And that's why we love them! <3