Questions about sizing and arranging icons

In the old days you could go to any folder and select Help and it would tell you "About Windows" and you could bring up the start menu, right click on My Computer, select Properties... (that's all just basic stuff about trying to figure out exactly what version...)

Now I'm trying to learn about Windows 10 and would like to be able to have small icons in all folders since the new medium icons are so much bigger than "Icons" used to be, and just align them to grid so they can be placed wherever I want to put them. Is that impossible with Windows 10? Or is there some simple way of arranging them the way we want to that I've been too stupid to figure out? When I select small icons it puts them in 2 verticle rows and I want them placed horizontally so I can move them wherever I want to and just have them snap to the grid. And have it that way in all folders. Is that too much to ask of Windows 10?

Thank you for any help with this!
David