DDR4 home.
Please view the DDR3 2133 tutorial prior to viewing the DDR4 material. DDR4 is based on DDR3 and I assume you have DDR3 down cold. You will be confused if you do not have a solid understanding of DDR3.
DDR4 Part 2 Signal Values and Timing
DDR4 Part 3 Mentor HyperLyns Lab Introduction
DDR4 Part 3a is Lab Instruction for Post layout verification