Try out implementing these simple apps:
- https://github.com/denshya/proton/tree/main/demos/simple/src/tictactoe
- https://github.com/denshya/proton/tree/main/demos/simple/src/products-table
- https://github.com/denshya/proton/tree/main/demos/simple/src/Circles
These simple components:
- https://github.com/denshya/proton/tree/main/demos/simple/src/app/ui/MiniProfile
- https://github.com/denshya/proton/tree/main/demos/simple/src/app/ui/EditableAvatar
- https://github.com/denshya/proton/tree/main/demos/simple/src/app/ui/DropDown
- https://github.com/denshya/proton/tree/main/demos/simple/src/app/ui/Selector
And in the end, try implementing the Market mini-app: https://github.com/denshya/proton/tree/main/demos/simple/src/areas/market
It includes many other ui components, so I think it would be somewhat challenging - exactly what you need to grasp the Proton.