I successfully rooted my Note 4 and Note Edge last year on the first try. They were the first Android phones I ever rooted. Just follow the instructions step by step as they are written out. They show pictures as the software you use on the computer should look before you begin each step. Take your time and make sure you are doing each step correctly.Getting a little bored with my N5, might just have to root to bring back some excitement.
Is it a difficult process?
I have a Surface Pro 3 that I use for such things. You can do it on a Mac too if you run a virtual copy of Windows or run Windows through Bootcamp.