Hi Khadaa! Welcome to javaranch
Please be patient if you don't get any replies. Posting the same thing again and again will not get you anything(other than being scolded
)...
I appreciate the fact that you are giving
SCJP even when you don't have any prometric centers in your country.
As far as SCJP goes, the page you gave has complete details about SCJP.
Is it true? I must register/order/purchase this web site?
What do you mean by this?? You don't have to purchase any web-site. You have to buy a voucher, schedule your exam at a prometric center, and give your exam. You can purchase a voucher for SCJP online. It costs around $300.
As I was skimming through the link you provided, it says that you can use a voucher only in the country where you buy it. So watch out for that...