My commute is about that long. It gets easier the more you do it. I often take a longer, prettier route if I have time. Remember that the shortest route may not be the best or fastest. Plan around traffic if you can. Sometimes, 15 minutes can make a world of difference. Sometimes there's a parallel road to the busy one that is better for cycling on.

Food is your fuel. Make sure you eat something before your evening ride. I usually have a yogurt and some nuts.

You're going to love it!