This source provides detailed information about HSK exams. There are a few other HSK-related articles about HSK vocabulary with word lists, etc.
What would you recommend me if my main issue is learning how to pronounce the language/tones?
A lot of useful grammar/vocabulary-related resources here as well, some are HSK graded.
A community for learning and discussing about the Chinese language.
一個學習也討論中文的社會。
What would you recommend me if my main issue is learning how to pronounce the language/tones?
A lot of useful grammar/vocabulary-related resources here as well, some are HSK graded.