@Daniela
My Personal Finance Course, written for high school students, is not an on line course.
As it is licensed to schools at a per pupil charge I regret that I cannot provide it to you, nor an on line link.
One warning, avoid the Prager U on line course that is out there. It is not very good and full of political bias.
BTW, my course was written specifically for Connecticut anc deals with its tax laws and wages.