The -dik suffix. most other suffixes and grammar points, I had no problem. But -dik, I was so happy when I started to be able to construct my own sentences using it. 

mAKING RELATIVE CLAUSES. lIKE   THE MAN WHO SOLD ME THE HORSE

THE TOWN THAT WAS RAVAGED BY THE STORM ETC

I feel quite comfortable with the grammer now but the hardest for me is probably speaking and when using two nouns together or Accusative sometimes... Also verb forms like mekte, makta is something i still don't feel comfortable with :) but it'll be better with time i guess, i watch a lot of turkish series so i now have dreams in turkish and create turkish scentenses in my head on a daily basis :D 

I am still in my initial phases and I haven't yet encountered the -dik suffix. What I find difficult is the syntax. But I guess I will get used to that by time.

I'm struggling with sentence structure.