Multi-facet challenge: change computers and migrate library
I have a multi-facet problem to solve. I currently manage my video/music/photos library with iTunes via a Windows 7 Home Premium PC. My library is stored in a wired external hard drive, Western Digital (along with other content). I am switching to a MacBook Air (new model). I am a first time user of a Mac! Here is my challenge (would love some advise on how to do the below and best sequence):
a) Swap my PC with the MacBook and have iTunes now run on MacBook Air and read from the current external wired hard disk.
We also have 1 iPad, 3 iPods and 1 iPhone 6plus. All devices, iTunes and the iTunes store use the same account.
b) I then need to install a NEW wireless Western Digital MyCloud 3T drive in the Mac Book Air
c) Then I need to move my library (ie. the content itself) from the current wired external hard drive to the new MyCloud one. I then need to redirect iTunes to read the content from the new MyCloud drive.
MacBook Air