I would recommend anime to start. It's easier to watch, it gets you use to Japanese, and you can track trends/ideas. Then when you get to manga you'll already know what to look for. For example I started reading manga when my anime series we're not moving fast enough. At that time Naruto and Bleach was miles ahead of their anime series. Recently in the past year I've decided my manga series are not moving fast enough either! So I started reading light novels. So you'll get there. Right now I track anime, manga, and light novels and I keep them all conveniently on my tablet.