1. Think and Grow Rich
2. The Science of Getting Rich
My question is, since these works are so old, are they considered public domain content?
Basically I'm wondering if it would be ok to go over works like these and expand and explain concepts from these books as it relates to my blog audience in video and audio format?
I know The Secret was basically a condensed work of titles like I listed above. So I have to imagine on some level you can remake the content in your own view as it relates to your audience?
Any details/resources/links on information where I can find what is and is not allowed would be great.