earn money; from age 15yr and older,
learning to drive; from age 16yr
drinking alcohol; 18yr and older

This would be useful – it would vary too much by state though and some ‘laws’ are quite open to interpretation. i.e. staying home alone.

Earning money as in employment was 15, I don’t know if it still is.
There was a regulation re leaving kids home alone….or mininum age one had to be to mind a baby/toddler upwards alone without supervision. I don’t know where you can find out about it apart from may be registered Community Centres, a Govt. Welfare agency(they might get the wrong impression). Sometumes there is various leaflets in the reception/waiting areas in Local Council Offices. Medical Clinics, Hospitals. Perhaps a library.If you can’t find out and you really want to know, maybe check with your Local Member of Parliament –especially if your child is wanting to stay at home alone. The Police, especially those in charge of the front counter would probably know or should be able to check it for you.

Your school or local youth centre might be able to provide some guidance. There are lots of variations on a heap of these things – especially in work relationships. Things are different in different States and countries too.