Model-test.com is a practice website mainly for MCQ type exam, such as University Admission or BCS Preliminary exam.
There are Two (2) types of exam you can get in model-test.com. One is Practice Exam and other one is Model Test. You also get some previous year's question in the website that you can practice on, considering them as Model Test.
Anyone can be a member of model-test.com. However, ideally there are few user groups like those that hsc students, candidates for university admission and job purpose, can be benefited very much by this website.
Literally, you neither have to pay for your membership, nor its service. You only have to pay when you buy a pack of points.
Free points cost nothing but only your actions. For example, login with facebook, participate in exam (if offered), share reports, invite friends, score 80%, or above etc and free points does not have expiry date. On the other hand, you have to buy package points and it has a specific time limit. For instance, package of 350 points cost you Tk. 749 and it is valid for one month.
Lots of way you can earn your FREE points. Such as, when you registration and complete your full profile as required, you will get 30 points right way. Again every time when you 'login with facebook' button, you earn 2 points each time.
You can learn that from your account dashboard as well as you will receive a notification by email.
Yes, you can
Website automatically uses package points first and then Free points.