having actually learnt to the point of watching news tv shows and reading chinese forums i can say that going the classroom or exam route is a waste of time and money
learn the top 50 to 70 chars then start watching dual subtitled programs like cctv4
do it actively meaning pausing rewinding attempting to read subtitles before the speaker etc but never touch a dictionary in flow only much later if you couldnt figure from context repeatedly ie greater than 6 7 context attempts fail
1.5 years and you will be much ahead of anyone else