Yep - a .LOT. of wisdom is contained in that book
At home, I've got Windows 10 (both 32 and 64-bit) and also two Linux OSs (all on the same box):
Ubuntu - (with the Unity UI - be advised that Ubuntu will be moving away from Unity but not sure of when)
Zorin OS - this is quite nice for people coming over from Windows
I've set up two more partitions and when I get the time I'm going to put down Mint MATE on one and Mint Cinnamon on the other and test-drive them.
I set up /home on its own partition so I can common them up, so all Linux distros can see the same home drive.
Windows 10 (64-bit) is my main OS, but the others do get some use. Only thing with rocking so many operating systems is that it takes time when you want to update them all.
But do get used to the command line: obviously Linux commands are different from Windows ones, but it's still not that difficult to get the hang of.
Time. A commodity I don't have a great deal of at the mo.