Monster hunter scares me

 Okey so i bought monster hunter FU for psp and finished like 3 quest and ...
I still don't know what I am doing. 
I had a hard time finishing the first quest and there is just so much to learn about all the difference weapon types and armor combination. The controls are hard to master or just the game it self is hard to master 
I have also heard that this game is insanely long and i will probable be playing this for the rest of the year  

anyway I cant wait to get deeper into this game but can you give me tips and your experience with the monster hunter franchise.