dealing with Pins on the Windows 10 start


Does anyone understand how pins work in Windows 10?
I removed all the junk in hopes that fewer items would make things clearer, but it didn't I pinned a couple things to the start and in order to get to them I need to hit right arrow once and down arrow all the way to the bottom when they should be just down.
Apparently there are folders but I can't understand how they work.
Any help would be great because I would like to start using the start menu.

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