Islam, as we are given to understand in the Quran, was always the name of the religion ordained by God Whom we call Allah in Arabic. God is one and the only Creator and Sustainer of everything in the heavens and the earth. He created the first man, Adam, from clay and his pair, Eve, out of him. In this way humans were first created, then they were sent to the earth to live generation after generation until the last day of destruction. The first human himself was a prophet of Allah and he made known the teachings of Allah to his childrens, grandchildrens and so on so long he lived. But when with increase in population, some people forgot the teachings or abandoned the same, then Allah sent Nuah, the next prophet to guide the humans to pronounce and believe firmly that Allah is one, He has sovereignty over everything, He is the only Creator of everythig including the prophets and angels;therefore, none should be worshipped except Him. Thus whenever the peopole went astray from the path of Allah, He sent prophets to remind that none but Allah should be worshipped and they should believe in what has been said by Allah Who will resurrect them and judge their deeds of this life and place them in the heaven or the hell as warranted by the deeds. But He is very merciful and oft-forgiving to those making repentence and seeking forgiveness. Muhammed(sm) was the last prophet and no other prophet will be sent. All prophets were humans with the exceptional qualification that Allah communicated with them and they all taught the people to believe in Allah and worship none but Him.
Seeking spiritual help to any than God signifies association of partner with Him and this is a great sin which will not be forgiven unless the person in question repents and makes a comeback to the truth that none but Allah alone has any power to do any spiritual help or harm, and none but He should be worshipped. One who believes in Allah as the Creator and Sustainer of the universe, His angels, prophets, divine books given to different prophets, the last such book being the Quran given through Muhammed(sm), the seal of prophets.In addition to believing that Allah alone is the Creator and Sustainer and none but He was to worshipped, the prophets taught the people to say prayers, give compulsory alms and do fasting and hajj as they were ordained by Allah.So, Islam is simple:-
1. Believe in what has been said by Allah
2. Worship none but Him
3. Do not do anything as worship, which has not been ordered by Allah or done by the prophet.
4. There is no priesthood in Islam; one has to say his prayers and other obligatory ibadah himself.
5.Most of the Mollahs are greedy for money; they have invented various ibadah purchaseable for money( such as milad, dua, reading Quran,tasbih etc.) . They take money from people and do these ibadah for them. They are the misguided greedy and almost all the mosques in Indian subcontinent are occupied by such misguided Mollahs.
But remeber that one must do ibadah for the sake of Allah only.