While it is usually possible to apply to more than one study programme, there may be a limit to how many alternatives you can choose. Please check the details on the admission sites. Generally speaking it is usually a good idea to concentrate on applying to a few programmes that you are really interested in, rather than sending in as many applications as possible just for the sake of getting "any study placement whatsoever".

This depends on the programme you are applying to, but most degree programmes require that you prove your English language proficiency by means of an internationally accepted test (TOEFL/IELTS etc). Please check this and other detailed requirements in the admissions instructions of the institution you are applying to. If your native language is English, or if you can prove that your previous education has been completed in English, you may be exempt from the language test requirement.

Yes. Finish universities and polytechnics offer a wide selection of degree options taught in English.

If you apply to an English-language programme, it is not usually compulsory to study Finnish, but it is strongly recommended since it would help you a lot in your everyday life to know at least the basics of our language. Furthermore, Finnish language skills may be an important asset in finding part-time work during your studies, or employment in Finland after your graduation.