Yes, different countries have different eligibility requirements but fret not there are more similarities than differences.
Countries such as UK, U.S, Canada, Australia and Germany require proof that you have enough funds to pay for the course that you want to study. This can be your bank statements, or copies of your income tax returns. You should have the required band scores in your IELTS exams to get a student visa to study in the UK, US, Canada, Australia or Germany.