It was hard to decide where to post this. I want it to be in the right section (maybe textbook discussion or academic guidance) but I also want people that would know the answer to see it. Mods can move it if needed. I'm looking for something to read other than Merzbacher chapter 24. I just don't like the style. It's not readable in my opinion. The topics in the book are: The Electron-Positron Field The Dirac Equation Relativistic Invariance Solutions to the free Field Dirac Equation CPT One Particle Approximation Dirac Theory in Heisenberg Picture Dirac Theory in Schrodinger Picture Central Forces and Hydrogen I looked in my other QM textbooks and they don't cover this and in my QFT books it is covered in like the 3rd or 4th chapters, but I haven't read any of the books.