Replying to a question on the (again revived) thread "the three states", Shri Sadananda posts a beautiful explanation of many terms of Advaita. Read it in full!
This was posted in the same thread "the three states", in which a lengthy discussion happened on sushupthi and brahman. I have a previous post (with the title "How is sushupthi different from Brahman"), that is a notes of that thread.
Also, read Shri Ram Chandranji summarize Satya and Mithya.