General ACCADegree & ACCA

I am studying for my degree in statistics at a university. While I am looking for an internship placement for my course, I got rejected by many companies because I do not have an accounting background so I decided to take ACCA on a part-time basis. There are part-time courses offered by many universities but all of them are too expensive so I decided to choose a self-study option. Is there anyone here that can advise me on how to pass the ACCA exam (self-study) while doing their degree? Are there any recommended free materials online for self-studying students? Thank You.