The first time use of cannabis is unique. Although no one yet understands why many people don't feel anything the first time they use cannabis. They do feel it the second or third time that they use it.
At times the first time users are noticed by the people around them to be acting differently but they themselves don't notice it.
It has been suggested that the first time user can up his or her dosage to feel the effects but this is not recommended as it greatly increases the risk of an unpleasant experience.
If you have not used cannabis before you should proceed carefully and stick to the concept of less is more.
If you do not feel any effects the first time you will be sure to feel it the second or third time.