Is it good to try to present every interesting paper I study?
For me, -It really depends on who are you presenting to. Usually when I share something that seems interesting to my friends, usually they are happy but this won't suit to everyone. I would suggest to share a lot with people who is in same subarea of study with you or interested in your readings and do short presentations to others infrequently. The frequency of both of them will depend on your time and how interested people are.