Actually they do; in the UK at least, the NCSC (National Cyber Security Centre) provide lots of good information about cyber security, handling your passwords properly, child safety online, as well as various guidelines for other cyber security/safety online concerns.
No problem. I work in info-sec/comms-sec in the UK and it's an invaluable resource for guidelines on information handling and security practice. We often refer to it when we want to set a policy in the company I work for, for example on password strength in any given year.
I think it can be very useful also for startups that don't specialise in security to make sane security policies based on something "official".
I'll be sending my residential and micro business customers to it, as well. And it never hurts someone who thinks they're informed to read these guides.
https://www.ncsc.gov.uk/section/information-for/individuals-...
Also, to note, the NCA replied on Twitter to point out that the use of their logo on the poster was unauthorised and not endorsed.