Hello Luciana,
I encountered this challenge many times at the beginning. As Alex said, it helps if you are specific about your purpose. However sometimes we don't really know what our purpose is, we just know we need something, right?
I have found that if I have a piece of paper next to me, and Mindmap all of the info that comes through and then leave it for awhile, that when I come back to it I am able to make some sense as to how I am suppose to use the information.
I always believed that it was coming through for a reason, I just needed to be patient to see where I was going to use it.
I have many years of binders of my Photoreading worksheets and notes and they are really fascinating to see my transformation using the Photoreading techniques.
Regards,
Lisa