Discussion Forum

what is craving according to buddha teachings?

according to buddha, what is craving of forms , becoming and unbecoming that all create sufferings.
I m working in IT, i want to become higher level so i work hard and eager to know more information and knowledge to get it.
Is this craving of becoming or forms according to buddha? if so how could i become greater in life to earn more to serve my family.
What is wrong with expecting good thing happens and pleasant taste on food to eat when i m starving.
are these all craving that we should stop ? Please anyone answer.and one more
Why did buddha eat poisoned/decayed food which he may know it will kill him ? is it not dhamma to consume poisoned food to the natural body ? where dhamma stands in that?