The Theoretical Minimum General Relativity Pdf Upd Link
The official source for notes is Susskind’s personal Stanford page. Look for the file usually named GR_Lecture_Notes.pdf .
Theory is useless without solution. The book concludes by solving the field equations for the simplest non-trivial case: a spherically symmetric mass (like a star or a black hole) in a vacuum. the theoretical minimum general relativity pdf upd
Read Susskind's "Historical Aside" (new in upd) – Einstein had no rigorous derivation. The equations are the simplest possible curvature–matter relationship consistent with conservation of energy. That humility is valuable. The official source for notes is Susskind’s personal