Answer
Imam is Leader. They should be well efficient in giving solutions to the Muslims according to Quranic Law
Truthfully I don't recall Muslims singing when it's an Imam's b-day.
shia Muslims
An Imam
Imam, sheikh, Ayatuallah, ....
Muslims preach at the mosque lead by the religious leader called Imam or Sheikh
Ayatollah is the name of a Muslim leader of the highest order. The current worldwide population of Muslims is about 1.6 million.
It's the place in mosque where the imam stands and delivers the sermon to the muslims.
They get their name form Imam Isma'il ibn Jafar.
Currently Imam Khamenei is the leader of Shia Muslims.
Yes, Muslims have religious leaders but not with extensive legislative authorities as in other God religions. For Sunni Muslims, there are Sheikh Al-Azhar and the Committee of Olomaa Al-Azhar. For Shiites Muslims, there is AlImam in Iran.Answer 2Yes, there is two different types of leaders: political leader and Fiqh (jurisprudencein) leader. in Shia Islam view, currently Imam Mahdi a.s. (the 12th Imam) is leader of all Muslims but he is now at occultation and based on the required terms said by him currently Imam Khamenei is selected as political leader (Wali Faqih) by Shia scholars as the leader of Muslims until arrivals of Imam Mahdi a.s. also there are Maraje as the Fiqh leaders. Imam Khamenei is a Fiqh leader (Marja) at the same time. Shia Muslims in Fiqh follow the Jafari Fiqh which is based by Imam Jafar Sadiq a.s. who was the teacher of four founders of 4 schools of Sunni Muslims.Answer 3For Majority of Muslim called "Sunni " four founders of 4 schools of thoughts are religious leaders including Imam Abou Hanifa RA. , Imam Shafi RA, Imam Ahmad bin Hamble RA and Imam Malik RA.
When they baptize the new born baby in their land they use the word imam as the priest in baptizing the child ALGERIAN-NOUR: the muslims do not baptise their babies. Imam is the person who guides the muslims, he is the one who should be asked for religious questions. Imam is the one who prays with people because he studied the religion at university and he learned the Qoran.
first his wife Khadija (PBUH) then Imam Ali (PBUH) then Abu Talib (the father of Imam Ali)