what work is the best?

I think if you love your job, you will earn the best money. For me, it is important to someone that we love our job so we can be productive. We'll not be bored with what you do.

I do not think there are any shorcuts to earn more.You have to continously work hard and achieve that.As far as earning money on internet you ought to be very very careful.You need to concentrate more, on the genuinesss of the sites.

It depends, I am researching on it too. I have had decent earning for the last 2 days and I think starting a decent topic with atleast 10+ responses and few comments would give you the best run for your money. It's too early for me to give you proof for that, but as soon as I get it I would let you know.