This post is just for future reference with a few MySQL commands I can't really remember yet for creating a new database and mysql user. Probably now I posted them here, I will remember them ;). So it might be interesting or less interesting for you.
First, login as root with:
If you forgot your root password, follow these steps:
When logged in, create a new database:
And create a user for it, if we want a separate user at least:
And that's usually what you need to know.