If you want to get the most use out of your algs as quickly as possible I would learn the algs with the greatest probability of occurence first.
Start with the G perms since there is a 2/9 probability that one of the 4 G perms will appear at the PLL step.
After that move to the corner 3 cycles and the edge 3 cycles, each with a 1/9 probability to occur. The asymmetrical PLLs with order 2 come are in the same category as the 3 cycles, each having a 1/9 probabilty to occur. These are the R and the J perms
The PLLs that have exactly 1 axis of symmetry and no radial symmetry are the V, Y, T, and F PLLs each having a chance of 1/18 chance to occur.
Then you have the cases that are symmetric in 2 ways. Each either has 2 axes of symmetry, is radially symmetry in 1 way and also has exactly 1 axis of symmetry, or is radially symmetric in 2 ways. These are the E, Z, N perms. Each has a 1/36 chance to occur.
Next come the H perm and the solved case, each with 1/72 chance to occur.
I didn't learn them in this order, but if you learn them like this you'll maximize your chances of knowing the PLL case you get to when you don't yet know all the PLL algs yet.
Once again, in short form, I suggest learning:
1) All 4 G perms in no particular order
2) In no particular order both directions of both the A and U perms, as well as the R and J perms (including reflections)
4) V, Y, T, and F in no particular order
5) Z, E, N in no particular order
6) H
Chris