Sorry About All The Tags But I Really Need Help With This - Tumblr Posts

Does anyone know a drawing or animating program that they would recommend? I've been testing a ton of them out and so far all the ones I've tried have either lacked basic functions, been expensive, or are just very difficult to use. I think I can make due with using the drawing programs that I've found so far for drawing and making a comic that I've been wanting to. But I really want to start animating as well.