If you’re interested in numerical stability issues associated with Lagrange interpolation, Trefethen and Boyd is still relevant: https://people.maths.ox.ac.uk/

If you’re interested in numerical stability issues associated with Lagrange interpolation, Trefethen and Boyd is still relevant: https://people.maths.ox.ac.uk/trefethen/barycentric.pdf https://people.maths.ox.ac.uk/trefethen/barycentric.pdf