Definitely get with a recruiter if you are interested in the military, but a few things to bear in mind are the following:
Fitness - make sure you can run/sit up/ push up the minimum requirements for whatever branch you are looking to join Academics - the academies are VERY competitive - make sure you have the GPA and volunteerism to back up your application Clearance - ensure you can pass a background check
Willingness to serve - you will have an amazing time if you choose to go into a(n) academy and transition to the military. You will make friends, travel, and learn the politics that come with any life experience, but just know if you do join - your personal stuff comes second. You will be asked to stretch your time and patience as the mission always comes first. Good luck to you!