Most converts to clipless are already good riders. They can balance in tricky situations. Most riders have some "fail-to-unclip" moments when the bike loses control underneath them.
As a new rider, I would suggest that you learn how to handle the bike confidently. You will have more than enough to think about, with gearing, braking and chosing your riding line.
You can ride a bike without clipless pedals. Many riders use platform pedals for stunt riding, and toe-clips for commuting or just riding along easy trails. Modern toe-clip users never tighten the straps, so they are easy to get out of.
You can ride with leisure-type cycling shoes or trail shoes, and have adaquate stiffness in the sole for efficient pedalling.
Clipless systems have even stiffer soles, which give you an advantage when you are pedalling really hard, and they permit you to pull better on the upstroke than toe-clips. For racing , they are pretty essential, but for learning to ride, and for just riding along, they are optional.