Learn how to buy fresh melons at the grocery store with expert healthy eating tips in this free online grocery shopping video clip.  Looking for the yellow color is going to be key. Also when you look at the ends, you want to make sure you can depress it just lightly.  Push lightly on the end, so you you get a little bit of bounce and a little bit of spring. And lastly it never hurts to smell it. When things are cold they don't have as much fragrance, so depending how these are stored, you may not get as much smell off of them. But typically if you put your nose to the end and take a wiff, you should be able to smell that nice sweet fruit in the center.