Summer programs, such as TAURUS, are great places to learn about graduate school. You should start to think about whether or not graduate school is something you will want to pursue after you earn your undergraduate degree.
Here are a few overview articles to start with:
- Guide to Graduate School from Astrobites
- Guide to different grad programs from Astrobites
This page contains information about applying to graduate school. If you have further questions, feel free to ask any of the grad students in the department.