[GSoC 2022] Resources on Schubert and Grothendieck Polynomials

[Archit]

Hi

I sent a previous email regarding this before, but I am not sure if that didn't go through or if it got overlooked so I thought I'd send it again. I'm a undergraduate sophomore with a background in real analysis, discrete mathematics and linear algebra. I'd been hoping to contribute to SageMath via GSoC, but unfortunately I am not familiar with Schubert and Grothendieck Polynomials and would like to read up on them before I submit a proposal. As such, I would greatly appreciate if someone could refer me some books/online resources which explains these concepts at a low(er) level.

Thanks

Archit