I recommend the Manhattan GM. You can put it on your shoulders, use as an elbow bag or a handbag.
I recommend the Damier Saleya MM.
Here's what I think you should do. Go directly to LV and try on all the bags that you find attractive. Tell them this will be your first lv, so they can give you some advice and help you make a good decision. I'm so excited for you! Picking your first lv is so much fun. Be sure when you make up your mind that you ask for a box. Sometimes Sales associates don't automatically give you one. I think you will be amazed at how many styles you are going to like. Have fun and be sure to let us know what you get!!