So you took one class 4 years ago, and that's it? & I've heard of the JPLT but N3? Like the 3rd level or something? .-.' & I hope you do well! Have confidence in yourself, lol.
'I will lose direction from a teaching site very easily?' & I dunno' if you still remember, but how much did you pay for your class? I really want to learn Japanese, but I'm frightened by the $ and am afraid to get ripped off. :\ Like pay the money and end up learning nearly nothing. Because you know how classes take so slow because they don't want to rush you, etc.