Previews

Okay so I very recently decided to make a wordpress website where I review things.

However I have a problem. On my homepage the entire review is shown. I was wondering if there was a way to put up a preview on my homepage and then when you click it you go to the whole review.

Im not sure if this is possible but if it is I would really like to know how to do it. Having a huge review on my homepage is kinda annoying… Thanks.