Use Git (GitHub) for Unity Development

In any case, I recommend you begin watch from Dapper Dino video - https://youtu.be/lYAHmthUO1M, which described the main aspects of use Git (GitHub) for Unity Development.

I didn't use GitHub often before this project (especial for disturbed development), therefore many simple Git tasks & questions wasn't clear to me. And I spent some time to find information & did some tests. I decided "shortly describe" the main tasks & variants of use Git concern to this project.
I did the most tasks by GitHub Desktop.
The standard command line Git interface only used for recieve some information which absent in "Desktop interface".
I made video and put on Youtube (see description for timecode!!!), i think it may be helpful for beginners ("Git&Unity project").

Position Name
00:00 Use Command interface Git from GitHub Desktop
00:47 Results of Fork & Clone from Main Repo
06:36 How to find the last updates of Main Repo (updating strategy)
11:47 The Specific of first run Unity from Clone of Main Repo (directory structure)
14:47 The Strategies for making Changes to the Project
15:35 Discard changes
16:35 Made commit
18:08 Sync local Repo with Own Remote Repo
19:31 Create Pull Request
21:34 Demands before new PR
22:28 After Commit
23:19 Receive Updates from Upstream
24:38 Specific merge in outsync branch
26:10 Update Own Remote from Local
27:25 Pros/Cons Development in main branch
29:08 Stashed changes
30:46 Transfer Changes to New Branch
32:01 What is doing in process of switching branches
32:38 Specific GitHub Desktop
34:36 Copy new branch to Our Remote Repo
36:06 Updating Separated branch (rebase)
41:04 Pros Pull request from separated branch
41:52 Strategy use two branches