Iron content of Potassium ferricyanide chemistry experimental study?

Hi,

I am in the final year of pre-university school in my country.

As a chemistry experimental test, I got the task of determining the iron %content in Potassium ferricyanide.

It is a independent experiment (I have to do it without any help or guidance from the teacher whatsoever)

I have no idea what to do.

I am assuming that I will have to dissolve the Potassium ferricyanide in pure H2O, which will give me Fe(CN)6 {3+} ions ( a complex ion).

Next I assume I will have to titrate something from a buret, which will cause a Redox reaction and will probably change the color of my solution when im fininshed. I have however no idea what to put in the buret and what to expect. I cant find anything helpful on the internet either. Can you please help me?

thanks a lot