I studied English 90% by myself through books and online courses. I have tried to learn Chinese with the same method, but stopped because I don't have Chinese speaker environment to practice my listening and correct my pronunciation. But now I'm here livening in Singapore with almost all of my friends could speak Chinese, thus I start to learn this language again. I can ask my friends' help for this language, but I think it will be good also if I keep learn by myself and practice with them, and with you. 谢谢^^