A person does NOT need to do a course or obtain a certificate to become a Muslim.
If there are no Majids (Mosques) and Muslims in your area; and you do not ahve a means of contacting any Muslims via phone or online then you can declare the Shahadah to your self.
At MuslimConverts.com we have helped brothers and sisters say the Shahadah via phone and via the Net. So if you wish for us to go through it with you step by step. Please do no not hesitate to leave us a message and we can arrange an online meeting at a mutually convenient time.
However, it is not sufficient for anyone to only utter this testimony orally either in private or in public; but rather, he or she should believe in it with a firm conviction and unshakable faith. Once you have said the Shahadah then you will be like a New Born Person. Free of any sins. Just like a child is born sinless.
From the Emails I received on the message board. I noticed some women have delayed their Shahadah because of menstruation. It does not matter if a woman is menstruating. You can say your Shahadah even when you are menstruating. The women do not go inside the prayer area of the Masjid (Mosque) when menstruating. However if they want to say their Shahadah at the Masjid they can arrange to say it say just outside the Masjid or part of the Masjid complex which is not regarded as the place of prayer.
Pledge of Allegiance
During the time of the Prophet (peace be upon him) the people would also give their Bai'a (pledge of allegiance ) and the Prophet peace be upon him would accept their pledge.
Pledge of allegiance being that they would obey his commands, Be on his, the Muslims and Islam side against the enemies of Islam even if the enemy was their own relatives and friends. That they would fight on the side of the Muslims. That they would not fight on the side of the non Muslims against the Muslims. That they would not give information to the non Muslims which they could used against the Muslims.