POV: It's your first day at the "Jim"
Most people know to start with weights they can lift and use heavier ones as they get stronger.
For whatever reason, there's an idea that this somehow doesn't apply in calisthenics.
It makes sense because some exercises might look cleaner or more impressive than others. For example, learning to do a proper full pushup, squat, or pullup with good form is a major milestone for some people - and that's wonderful!
However, at the end of the day, those are just some of the many pushing, squatting, and pulling exercises out there! Depending on your fitness level, they might be too hard, too easy, or just right.
It's okay to test your strength, but spend most of your time doing variations you can do competently with good form.