Figuring out Freebies

I have been an avid blog hopper for some time now. I love it when a blogger offers a freebie and all you have to do is click on the picture and surprise you are at the freebie ready to download. I have been able to link a doc to my blog but I always have to put a click here for the freebie. Here's an example

Click here to download

 I don't like the way it looks and want to be able to just have people click on the image. I have looked all over Google for a solution, but can't seem to find one. If anyone out there knows how to do this, I would love some help.