Hello, My dear friend.
It has been a while since we last communicated with each other.
I am happy that there were those who have already given you good advice, concerning your question.
I will not add websites to the ones that have already been given to you. You have enough to read already, going to these website.
However, if you find the references that have been suggested to you do not meet your needs, I will happily provide a few of my favorite sites.
I wish you the best.