David Pogue 
Switching to the Mac: The Missing Manual, El Capitan Edition [PDF ebook] 

Those who have made the switch from a Windows PC to a Mac have made Switching to the Mac: The Missing Manual a runaway bestseller. The latest edition of this guide delivers what Apple doesn’teverything you need to know to successfully and painlessly move your files and adapt to Mac’s way of doing things. Written with wit and objectivity by Missing Manual series creator and bestselling author David Pogue, this book will have you up and running on your new Mac in no time.