Most TNR tricks are easy to learn for a beginner
Since they are all based on similar principles, the handling is also very similar.
Once you master your first TNR effect, the next one is, generally, pretty simple too ;-)
Have you performed any TNR effects?
However, that being said, there are some that require a more extensively constructed gimmick coupled with some additional sleights...and vanishes e.g. "Together"
These require more of an intermediate level of ability, in my opinion.
Follow this link for info about a more challenging TNR reveal.
Just watching this will enlighten you to more info in a few minutes vs. me typing all night ;-)
https://www.youtube.com/watch?v=1JqegObghPU
To answer your question specifically, if you are a beginner, I'd get one of the better known and easier to perform TNR's initially.
Torched and Restored by Brent Braun
http://www.penguinmagic.com/p/5079
Torn2Pieces by Shawn Farquar
http://www.penguinmagic.com/p/3723
Torn by Daniel Garcia
http://www.penguinmagic.com/p/1103
I like all of these, but prefer Torn2Pieces because it uses pictures that, with a little pre-work, I can make very personal for a specific audience.
