Please read the tutorial(s):
.TS
lb l.
-dgit-user(7) for users: editing, building and sharing packages
-dgit-nmu-simple(7) for DDs: doing a straightforward NMU
+dgit-user(7) for users: edit, build and share packages
+dgit-nmu-simple(7) for DDs: do a straightforward NMU
dgit-maint-native(7) for maintainers of Debian-native packages
-dgit-maint-merge(7) for maintainers who want a pure git workflow
+dgit-maint-debrebase(7) for maintainers: a pure-git rebasish workflow
+dgit-maint-merge(7) for maintainers: a pure-git merging workflow
dgit-maint-gbp(7) for maintainers already using git-buildpackage
dgit-sponsorship(7) for sponsors and sponsored contributors
.TE