i think its better to take class rather than go for self study
even its better to take class from an average teacher, because atleast it will give us a basic knowledge and idea about tax and one more important thing is that a teacher give his all experiance while teaching and when we go for self study we can learn the same thing but after difficulties and a lots of time also have to be spent
so better to go for coaching,,,,,,,,,,,,,,
its just my personal opinion..........