(salam) I am learning about Islam more and more, and alhumdullilah my knowledge is expanding. My sister tells me that I as a Shia Muslim need to pick a Marja to follow. I am wondering who is the best Marja to follow and why? What is everyone's Marja they follow? How do I know which one is the best to pick? Is there a list of Marjas? Jazak Allah Khair (wasalam)