Basic Shapes and Forms
The first step in drawing is always simplification. The world is a complex place. A mistake many students make is trying to depict the world in all its complexity. It is possible to put all the details of your perception in a drawing
or painting, but don't start with the details. Simplify first. All subjects are made up of just a few basic shapes and forms. Learn to identify these basic, components, then begin your drawings with them.
If you can draw the basic forms and see them in complex objects you will be better able to draw those objects.