I am new to LaTex. I am currently using TexMaker for Mac on El Capitan OS. After saving my tex file, when I click on View PDF, "File not found" pops up. But if I first click on Tools>PDFLaTex and then click on "View PDF", then the pdf file appears in the right window of TexMaker. It seems that for every new tex file, I have to first click on Tools>PDFLaTex before viewing the pdf. Is this normal? Isn't there any way such that I won't have to first click on Tools>PDFLaTex everytime I want to view a new tex file? Your help will be highly appreciated.