Hollywood/Los Angeles Dream Chaser

I've recently started to seriously consider moving to California (more specifically Hollywood/LA) to further pursue my dreams of one day making it in the entertainment industry. My main passion is singing and performing on stage as that's where pretty much all of my experience comes from, but I would also love to get into screen acting at some point.

Does anyone have any advice for a young hopeful such as myself?

Would love to hear anything and everything you're willing to share, especially if you have experience making the move yourself!