I'm new to this and I'm trying to write a document in TexShop. I keep needing to check my work as I go but to do this I have to save my code, close the window, reopen TexShop, then use the Open for preview option to view it as a PDF to see what I'm doing. I've seen the option under window called Source <=> Window but when I press it, nothing actually happens. I'm using TexShop on Mac, by the way. There must be a simpler way to preview what I'm writing?