From my experience so far, "easy or hard" probably depends on you. If you're a whizz with maths then the traditionally "hard" subjects like Gen Nav might come more easily. Subjects like air law, ops are "easier" in the sense that they don't require much thought or understanding, just rote-learning of facts. My school orders the subejcts as follows:
Stage 1: HPL; Ops; Air law; Met; VFR Coms; IFR Coms;
Stage 2: POF; Gen Nav; M&B; Performance; Flight planning;
Stage 3: AGK; Instruments; Radio Nav.
They told me I should definitely do stage 1 first, but could then do stage 2 and 3 either way around. That has worked okay for me so far. I've completed stage 1, I'm about to sit the stage 3 exams (fingers crossed), and have pushed stage 2 to the end.
Last edited by taxistaxing; 3rd Jan 2013 at 12:42.