Hello! So what’s up is that I am writing an overview of the REPL aimed at people who have never seen a command line before and would like to know what everyone thinks should be essential knowledge. I plan on covering modes, common commands such as those for scrolling through the history, how backspace and delete work, along with tab completion and customizing the REPL.
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Paging the REPL master @miguelraz and the REPL artist @Ronis_BR ! 
Also, welcome to the community @Steven_Kell ! The two folks I pinged are experts with the Julia REPL and have a ton of resources they have created.
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Thank you. I’ve been following Julia for years but finally decided to get serious about learning it recently after getting introduced to Logan thanks to PyData.
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That’s awesome! I presented last year at PyData Global on Javis.jl.
Also, here is a great video to look at for REPL Mastery.
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I feel like knowing about TerminalPager is a good thing.
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@Steven_Kell I’m so glad you asked this question because it was precisely that question which led me to make a 3 hour YouTube workshop for JuliaCon 2021 on Julia REPL Mastery (which Jacob already kindly mentioned).
I think I go over all those things you asked for and more.
I definitely need to find time to chop up all the lil’ nuggets into bite size 30 second videos, but that’s what the new year is for I guess.
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