@Gueke Micha Hello And welcome !
You will find all the information here : https://gis.gov.gh/visa_permits.html
However, from the information I have seen on internet, it seems that cameroonians need visa prior to arrival.
There is no embassy of Ghana in Cameroon, you will have to contact the nearest embassy to your country of residence : https://embassies.net/ghana-in-cameroon
You may also enquire from your school or university as they need to provide you an admission letter.
Regards
Bhavna
