I spent a week alone in Europe and learned 9 lessons about solo travel

Business Insider's reporter traveled solo during a train trip through Europe.Joey Hadden/Business InsiderI had plenty of experience traveling alone before I went to Germany and Austria.But solo travel in Europe was a different beast.I learned how to tame it.I thought I knew what I was in for. I thought I had it all figured out.I'd taken 30-hour train trips up and down the East Coast, spent seven nights sailing the Caribbean on one of the world's largest cruise ships, and traveled by rail to Niag