I'll walk you through the process of coding a ToDo list app on Boomla.
The following is covered:
create a website for the project,
install necessary packages,
build a form,
create ToDo entries,
list ToDo entries,
check off entries,
editing ToDo entries (via the Boomla text editor toolbar),
sort ToDo entries via drag-and-drop,
special empty state when there is no ToDo entry,
commit our work.