I have passed HSK5 and I hope to pass BCT and HSK6 this summer.

I also studied GMAT last semester and thought it was very easy to prepare due to all the online resources, the official guide, and all the free sample tests. Maybe it's just because I don't know where to look but I have not been able to find a lot of useful resources for Chinese tests. I have some sample questions, but I lack resources that mention specific techniques for acing the HSK.

It would be great if some of you guys can comment on how to optimally prepare for the exams.