I recommend watching the entire Spirit Science series of short videos on youtube. These are great introductions into a variety of metaphysical and spirituality topics and they are packed with a ton of information, so much so that sometimes I have to watch them twice to get it all. I have found it an efficient use of my time to get the overall ideas and key points on all these topics about which I’ve always wanted to learn, but don’t want to spend time sifting through tons of resources and material. Spirit Science has already done this for you and does a great job of condensing the key points. Also, the animation is funny and sometimes cheesy. The information in the entire series is information that needs to be spread far and wide so please share the videos in their series all the time with everyone you know! Each time you take 10 minutes out of your day to watch an episode, share it on your facebook or email it to some friends.