Ok I have just started building websites and use Avada theme. There are though feuteres that I realize that I need need to code myself because avada or wordpress does not provide me with these feuteres. So That is why I want to learn more about the structure of the codes building up my website. I think we are speaking the same thing here when you say “content” and refer to the database. Would you mind helping me how to locate this database? Also do you have any suggestions on how I should proceed my learning about understanding the structure of my website codes (or the database)

I did some research and got clearer about what I would like help with. So today I have wordpress and flywheel. I have my primary local site but want to start a second “test” site, where I can test and try out new things without worrying about changing the content of my primary local site. Also it is good to understand how to be able to run several websites in case I come up with new ideas. So my question is: How could I do this, where should I start?
Please forgive me if my question is not still precise, maybe you can help me to narrow it down in that case!

Thank you again!