Frequent Question: What Are Linux Mint Mirrors?

I am a linux newbie as well, but a mirror is just another server to host a download of a file. When you click on either main or bases server you will be given a list to pick from, if your download are slow you can select a faster more local one but there is no harm in keeping it default from what i can see.

What is a Linux mirror?

As you find it out yourself, a mirror is another server which mirrors/clones everything from the main server.

Are Linux Mint mirrors safe?

yes, mirrors are safe. apt packages are signed with gpg, which protects you when using other mirrors, even if it downloads over http.