If you are just getting started, take an online class. Seriously. Reading page source or inspecting the applied css on other website will be slow confusing proc

If you are just getting started, take an online class. Seriously. Reading page source or inspecting the applied css on other website will be slow confusing process. Go to lynda.com (now linkedin learning unfortunately) and take the css essential course, then build your own personal website. The videos will give you good fundamentals and your website will give you real world experience. No amount of advice or tricks can help you when you don't know the fundamentals.