It's probably better to stick with one-on-one tutors than go to a coaching tutorial in a room full of 15 other kids. After over a year there, and i "failed" tutoring. Yeah, that's right! They give out reports and i failed! Just coz i move on ahead and do all the exercises, then when he's going through all the questions SLOWLY on the board, i'm sitting there bored out of my mind. And because i don't ask any questions, he takes this as an indication that i don't do any work and hence me getting all "more effort required."
Enough about my rant. As i was saying, private tutors are so much better as you guys can work at your own pace and focus on the parts you have probs with. I'm not sure about electronic tutors, i've never really tried one before. Whatever you do, don't go to coaching clinics!