can i earn 100$ per month

It requires a lot of work. I think you should join lots of legit earnings sites and track your performance on an Excel spread sheet. For Mylot, making a goal of 20 dollars per a month is really possible. Put great effort into it, and you will need to spend at least six hours a day in front of the computer. There also will be a need for you to plan and look ahead of schedule, this way you are sure to estimate the proceeds you will make from a specific amount of work.

100 per month? there are few sites that are trustworthy but you need to be almost all day online. so is normal that you rather have a offline job. me i work online but i have to spend many hours here to earn at least some money and even that isnt enough. you can try here in mylot bcs they really pay you and maybe other site that many people say that they earn a lot that is called techdoctorsdeal.com. they said like earn 50 dollars a day. so just check it.

i want to know.

It is not so easy my friend, your target is too high.