Welcome!
Fortune Cookie's videos were worth reviewing for me when I was getting started. Other resources with much of that information and more can be found here and on the LASC site. Voracious reading on these sites plus YouTube videos like FC45LC's helped me avoid a lot of rookie mistakes.
Read and view widely. Know your sources. Be aware that there are still controversies and conflicting opinions in the casting world. Don't hesitate to ask questions.