Yes, it will help to know what device you have.
The best advice, is to look at all methods available and choose one you feel comfortable with.
Then, read the instructions, several times until you understand. Prepare your computer beforehand and make sure everything appears to work (communication with device like it should).
Know your device! Know how to do things like boot to recovery and create a system backup, and how to restore that backup if things go south. If the instructions say to check for things like version numbers, you need to do it. Some root methods are incompatible with certain bootloader versions. Or there are different rooting app versions.
The bottom line,is the more you study up on things, the more comfortable you'll feel.
And ALWAYS, ask a question before making a n00b mistake
Rooting on a lot of devices, is usually a pretty painless event provided you do your homework first.
So, which device do you wish to root?