Hey guys just wanted some advice. I am an aspiring physicist. My main topics of interest are Particle Physics, Cosmology and Black Hole Physics. I have been planning to listen and study these lectures by prof and great physicist Leonard Susskind. http://en.wikipedia.org/wiki/Leonard_Susskind#Lectures So right now my exams are over and college will start in october. So i got 6 free months with me. So i thought i will start with them. So i have 2 questions : 1. Should i do the old core sequence or the repeated and new one? I am thinking of the new one as it will also probably have the new developments of all these years. I dont think doing both will be right. 2. I am starting with quantum mechanis. I really dont like classical and quantum mechanics both. But i need to get a grip on quantum mechanics to understand the rest of lectures on particle physics string theory and cosmology. So i am leaving it out classical mechanics. Am i making a mistake? Or can i leave out quantum also. Will i need quantum to understand the rest of the lectures?