I think learning the fundamentals of the git command line is pretty simple, and pays large dividends.
Indeed, learning to use git was one of the main things that spurred me to learn to use the command line for many other tasks. It's a good starting point.
I'm very comfortable with the command line in general already, and if I have to I can use git on the command line. I've just always felt a GUI is the best interface for git - personal preference I suppose.
I'm a very visual person when it comes to code, and being able to see a nice history/diff etc inline with a few clicks just sits better with how I view the world & my ideal workflow.
I appreciate I'm probably in the minority on that though, as evidenced by the lack of client from those two big players I assume they feel that way too!
Exactly, I feel the same. By default, git commit just shows me "M /src/foo/whatever", I prefer to use a GUI where I can then click on that and it shows me a nice fullscreen visual diff with colour highlighting etc. Just works a lot better for me in being productive and reviewing things before I commit(an essential part of any workflow)
I also prefer a nice visual diff and branching so usually depending on what project I am working in I always have Gitlab or Github open in my browser. Everything else is done on the CLI.
I started with GitHub for Windows and have quickly transitioned over to PowerShell. Bit of a learning curve, and I still have to look up a number of commands, but I've actually found it easier than using the GUI. I don't even use the Android Studio integration ...
Indeed, learning to use git was one of the main things that spurred me to learn to use the command line for many other tasks. It's a good starting point.