Does anyone know if you can really get legally ordained as a minister to marry people online?

yes, you can get the ordination but your state government decides who can legally officiate at a wedding. check with your county court house for the rules.

There are online courses/vpcertificates, but you still HAVE TO register with a state so you can legally marry people.

Depending on where you live

In the USA you can become an officiant on line and legally marry a couple, you would need to look at your state's law

My daughter and her husband were married by their friend. My friend's daughter had her aunt as their officiant

Depends where you are in the world - while some US states allow this, most countries don't.

No, not in most states anymore. It's not illegal to do that online ordination thing, however, jurisdictions have changed their rules in most places so that in order to marry someone the minister has to have a physical address from which they perform regular services to real parishioners. Saying you are a minister, showing them the certificate and saying you have services out of your house won't get around the law changes.

Some places are now allowing a friend or relative to register to perform a single marriage on a particular date. It's a special certification for a single wedding and has nothing to do with being a minister of any kind.

Check with your local courthouse before attempting to go this route. Being ordained online started as a joke thing and a ha ha way to get around the laws on who can legally officiate a marriage. Laws vary. It doesn't take much to become a Notary Public and they can legally officiate in many places.

Yes you can.

There are famous people who have done that.

A few years ago, Andy Cohen got ordained and married a couple on his show.

yes, my mom got ordained while i was still in elementary school. i think she went through this site https://www.themonastery.org/ordination

Yes 100% there is an online course you can take

Yes you can ...

You'll have to take the course but you can.