would this be an useful topic to start on the forum?
a bit like a f.a.q. -not only links- like: what's knazar, firewall settings, (home dir) encryption, where to store your personal data (separate home partition or external), back up of (personal) data, clonezilla, user accounts (e.g. make an account without admin privileges for your daily usage), pgp, enigmail, you name it.
a bit off topic, but interesting though imho, is meta data and sorts of data: the quality and pros and cons of (different types) of data.
e.g. did you know that .jpg
pictures loose quality (=data) every time you change something and store it? and what meta data is stored with every photo you take (unique fingerprint, camera type, etc.)?