What's the best way to study?

 if you can find a course in the language(s) you want to learn in your country this is quite a good way to study. A variety of courses are usually available, including part-time and full-time courses, short intensive courses and courses leading to qualifications. If you look around you can probably find a course that suits your requirements. The main advantage of such courses is that you'll have a teacher or tutor to provide you with instruction, support and feedback and with whom to practice your language. You will also be studying with others who are at more or less the same level and you can compare notes with them and help one another. Formal courses also help you to structure your studies.
Taking a course is not for everyone however - some people don't feel comfortable in a classroom environment and prefer to study at their own pace and when it suits them

 

Studying abroad

One option is to study a language in a country where it's spoken. There are numerous schools teaching English, French, Spanish, Italian and German, but far fewer teaching other languages. The main advantage of studying abroad is that you are totally immersed in the language, not just in class, but the rest of the time as well. As a result, you should make fairly rapid progress. Another benefit of studying abroad is that you get to try the local cusine, to meet the locals and to sample the local culture.
The main disadvantage of studying abroad is the cost, not just of your course, but also of your accommodation, food and travel. This can work out considerably more than you'd spend studying a language in your own country.
If you're a native or fluent speaker of English, you could get a job teaching English in a country where the language you want to learn is spoken. This is good way to finance your studies.