Have no idea where to start

Hi wapplers,

I have basic knowledge in coding world and i would like to try wappler to build a website to sell photos with backoffice. I tried the basic wappler but is a bit confusing, i have no idea how should i start to reach my goals:

backoffice to create folders/categories and upload the photos;
pre-determine the price of each photo;
watermark option;
shopping cart; paypal payment and auto send to client the photos after payment;
reports from orders

I used blocs for mac, and is nice for a simple website, but with wappler, i have no idea where to start and how can i connect with databases and how to build the backoffice. I would like to see a video of someone bluilding a simple website from scratch with database and backoffice.
Is there anything similar available?