Hey, heres a list of how to guides.
Best thing to get set up first would your server, the easiest for me I found is Heroku and they offer a free tier. I will move to a different provider later but this is great for me to quickly test things out.
After that I would learn how to use Wappler's design features like toggling classes, dynamic attributes etc. Then learn the basics of framework7 for native mobile or bootstrap for web app project.
Once you have some understanding on these things you could start to work with data. Connecting the database, understanding querying and server connect. This is the stage where i'm currently at.