There is many jobs offer coming here but i m not understanding that how to contact them.?

I agree with the answer of Yazan Al-Shafai 

Hi Syed,

What you need to do is build your personal profile on Bayt.com by filling out information such as your name, personal details, work experience, and your education. Also, you can fill out your specialties in order to answer questions or ask questions so that you can be distinguished in the eyes of the employer when they view your activities.

Once you're done building your profile, you can simply click on a job and apply to it! I hope I cleared things up for you, happy job hunting (: