Glad you like the projector! I’m still waiting for mine, it should arrive very soon.
Most, if not all, of your questions have already been discussed in length on the forum. I would suggest you try searching for key terms. For example, searching for “windows 10 cast” brings up this thread (FAQ: How to Miracast to the PPM from Windows 10) which might be of help to you. The same thing goes for your other questions.
Good luck!