There's a few schools about that. The classic path is to understand the basic shapes (square/rectangle, triangle, circle), learn to add shadows to make them three-dimensional (cube, cone, cylinder, sphere), and then learn to recognize those shapes in what you see. Another school (as demonstrated in Betty Edward's Drawing in the Right Side of the Brain) begins with paying attention to the edges of things, noting the angle of these edge lines to a reference line, and copying these lines to the paper (using the edge of the paper as your reference.)
Either way, beginners often think of learning to draw as learning the process of making marks on paper. They want to know how to make a mark that says "egg" or "tree" and get frustrated because they can't build their library of object-marks fast enough. Artists stop being "beginners" when they realize what drawing is really about is how to SEE.