What about if I work out, should I try to put meals after I workout or before? and how much should I make sure to have inbetween?

Ok, so I'm hoping not to cause too much trouble with this issue, just a little specific and trying to get some help. I'm about 125 lbs, 5 foot 9. I've been up to 165 before, with a little work, but that was a few years ago. I've been bouncing between 130-135 for a couple years now. I've never once i...