Have you looked at getting a free trial of Microsoft Office 365? That will at least get you started. I pay monthly for it but you can possibly get a student account which you pay for the year all at once.
Sabina LaGrou
2016 Student Ambassador
PS found the info to get it as student.
Each Penn Foster student will have to call individually and purchase Office 365 University. The number to call is 800-642-7676. Microsoft will then request any necessary information to verify you as a Penn Foster student to complete the software order.