Explore the fundamentals of spin-spin splitting and coupling in proton NMR spectroscopy through this comprehensive organic chemistry video tutorial. Learn to apply the N+1 rule for determining signal multiplicity and understand the intensity ratios of various signal patterns using Pascal's triangle. Delve into complex splitting scenarios, such as triplets of quartets and quartets of triplets, commonly referred to as multiplets. Gain valuable insights into interpreting H NMR signals, enhancing your understanding of this crucial analytical technique in organic chemistry.