Use an existing app to model a new one.

Tutorial

time	section
00:00	Intro
01:11	The plan
04:11	Git repository
05:01	Environment variables
06:23	Other files
07:24	Package
08:42	The rest of the folder
09:15	App folder: os-app
09:46	Shared folder: os-app/_shared
10:01	Common files: os-app/_shared/common
10:54	Collection or parent object
14:18	Child object
16:49	Root Link
17:31	Setting object
18:09	Transport
18:53	Service Worker
19:16	robots.txt
19:58	Parent form
21:40	Parent objects list view
24:44	Browse module
29:28	List item module
29:50	Homepage
32:00	Guide
33:24	App container
36:01	Prefixes
40:13	Simple replaces
41:43	Bugs
42:35	Running
44:44	Conclusion

Image attribution: Man holding brown rolling pin by Amber Maxwell Boydell.