Driving a car and riding a motorcycle require different skills and knowledge. Although motorcycle-licensing regulations vary, all States require a motorcycle license endorsement to supplement your automobile driver's license.
To receive the proper endorsement in most States, you'll need to pass written and on-cycle skills tests administered by your State's licensing agency. Some States require you to take a State-sponsored rider education course. Others waive the on-cycle skills test if you've already taken and passed a State-approved course.
Either way, completing a motorcycle rider education course is a good way to ensure you have the correct instruction and experience it takes to ride a motorcycle. Contact your state motor vehicle administration to find a motorcycle rider-training course near you.