Hello, Can anyone recommend the Mandarin classes for adults?

Hi! I've read a couple of good reviews for Confucius Institute (at NTU@one-north campus Executive Centre). The course is structured and organised. You can look at the programmes offered here: http://ci.ntu.edu.sg/eng/Programme/aclp/Programmes/Pages/Language-Programmes.aspx If you are a Singaporean, you can use your SkillsFuture Credit to offset the course fee.