What is an easy J Perm PLL algorithm that wouldn’t be too complicated for a beginner at speed solving?
One easy J Perm PLL algorithm that is not too complicated for a beginner at speed solving is the following:

R' U R' U' J R U' R' U' J' U2 R U

This algorithm only has 10 moves and does not require any complicated finger tricks. Here is a breakdown of the algorithm:

1. R' U R' U' - This is a common setup move for J Perm PLL algorithms. It sets up the J shape in the corner of the cube.
2. J R U' R' U' - This is the J Perm algorithm itself. It swaps the two adjacent edges and the two adjacent corners in the J shape.
3. J' U2 R U - This is the inverse of the setup move and completes the PLL algorithm.

Remember to practice this algorithm slowly at first, and then gradually increase your speed. With enough practice, you should be able to execute this algorithm quickly and efficiently.
Please explain what J Perm PLL algorithms are in simple terms.
Certainly!

A PLL, which stands for Permutation of Last Layer, is the last step in solving a Rubik's Cube.  There are twenty one PLL algorithms, two of which are called J Perms.  The decision of which permutation to use depends on how the final layer ends up looking.  More specifically, a J Perm is used to swap two adjacent edges and two adjacent corners.
Could you elaborate further on how to decide whether or not a J Perm should be used?