Learn Legendre's Polynomial & Orthogonal Functions Quickly

[NewtonApple]

Can anyone tell me where can I learn about Legendre's Polynomial and Orthogonal functions in a jiffy? I've to use it to solve my scattering problem. I know a thing or two about it but don't know how to use in a specific problem.

https://www.physicsforums.com/showthread.php?t=410830

 

[micromass]

I like Folland "Fourier analysis and its applications". Chapter 6 deals with orthogonal polynomials.