I was born in OK but moved away when young & didn't get to know family. We came home yearly to visit but normally only saw mom's side. Most of the info I got on mom's side was per her mom & her dad's sister. Most of the info I got on dad's side was per his sister Vi.
If you add anybody to this site you're responsible for them unless you transfer them to somebody else including Find A Grave. That means you have to keep your email updated. People can suggest a correction & if they do this site will automatically send you an email noting whatever they have to say. Depending what it is you may have to act or at least reply. They can also edit some things so on your profile page is an "edits" tab where you can approve or deny them. If you haven't approved or denied within 30 days edits will automatically be done - whether they're right or wrong.
If you can accept the above & decide to join/contribute to this site the first thing you should do is read the FAQs which you can get to by clicking on the link "help w/ Find A Grave". Contribute includes suggesting a correction. You should also read any guidelines you'll find somewhere in the process when adding or uploading anything. It seems easy here but there's a way to do things & you need to read the FAQs to learn what they are. Also this site has rules & if you don't follow them you can be banned.