You have or are buying an awesome, expensive DSLR camera. You expect great images from this camera and know that the right lens is necessary to realize this goal.
You are being diligent. You are being responsible. But the more you research your lens purchase, the more confused you become. There are a huge number of Canon lenses available and a seemingly-infinite number of Canon lens combinations available. Determining which camera lens is right for you seems overwhelming.
Well, you can relax. You are certainly not the only one that is confused. And the good news is that, most likely, there is more than one Canon lens that can adequately accomplish your goals. I am going to make some recommendations for lenses for popular photography needs and subjects.
To begin, think about these questions ...
The site's Canon Lens Recommendations page has suggestions for many specific use categories, but the General Purpose Lens Recommendations is a good starting point. Then read the reviews for the suggested lenses (and other similar lenses) to make your decision.