Husband telling the wife to leave

Q: I am a 20 year old girl. I got married last year December. Recently my husband and I have been having some problems. He has told me to leave twice but from those two times I only left once which was last week Wednesday. I am currently at my father's house. My question is if my husband told me to leave, does that count as a talaaq?

Why should we follow an Imaam?

Q: Why should we follow an Imam such as Abu Hanifa, Ahmed bin Hanbal etc. as following the ways of of Prophet Muhammad (Sallallahu Alayhi Wasallam) is the best way? If Imams were correct enough then why do they have different way of offering Salaah? In this case one Imam can be correct while other three may be totally wrong in their practice.

Slave girls

Q: I would like to understand the limitation or placement of the ladies referred to in Surat al Muminoon 5-6 are the ones who "the right hand possesses" : "And those who guard their chastity (i.e. private parts, from illegal sexual acts) except from their wives or (the captives and slaves) that their right hands possess, for then, they are free from blame;..." Are these ones 'who the right hand possess' part of the 4 wives or are the outside this 4 wife limitation?