hi everyone. I finally decided to go back to school this year and get an A.S. degree in Physical Therapy Assistant at a community college. but first i have to take these 3 prerequisites; human anatomy & physiology (4 semester units, including a lab) Math - intermediate algebra or higher (3 units) and English composition or equivalent (3 semester units) before i can do that. this will be my first time going to college and i have no idea where to start or what to do. when is the best time to register? what is the difference between units and semester units? how long will it take me to finish these classes? can it be done within a year? the reason why I’m asking is because i need to have these prerequisites ready before March 2016, which will be the deadline for PTA Program Fall 2016 application. i already applied for financial aid and was eligible for pell grant and loan. now i was wondering if i could use financial aid to pay for those courses? thank you in advance! 