Actually there is a bit to it.
But on a barren beach (or a new beach) the first thing I look for is the wave action. They'll roll gently(?) up onto the beach in a smooth uniform fashion from one side to anouther...... to a point. Somewhere that smooth flowing action gets interupted. Often by a wave coming in from the opposite direction. Where they meet you'll notice a lot more water going out, faster. This is a break in the current, often caused by a sand bar / point / rock / or something that disrupts the flow. That's structure. Nice place to start.
there is a section on here that I believe is titled "reading the beach". Good info there. Worth looking at.