I dont know where to start. What do I use to put in the actual code? should i use an external software and then import it somehow? how do i do that? what software should i use?
I know some basics only, should i choose a template from somewhere and then play with it? add some javascript? should i take the template from what i have in cpanel or from somewhere else and put it in an external software? should i just use the site builder they gave me?
What do i need a mysql database for? should i create a database for all the content? if not, what do u use it for? tables? what kind?

Im not really sure what im doing can someone give me some guidance here?
I can learn code on my own but is there some kind of understandable guide about how to get everything up and running in a certain order?