I want to be a good scientist and science is a social endeavour. Crisp communication is essential. Learning to write well, live everything else, is a process. Here are some resources I often go back to.
How to write a great research paper by Simon Peyton Jones
How to read a paper by S. Keshav
Mathematical Writing by Donald E. Knuth, Tracy Larrabee, and Paul M. Roberts
You and Your Research by Richard Hamming
Principles of Effective Research by Michael Nielsen
An Opinionated Guide to ML Research by John Schulman
Speech is often a medium through which writing is communicated and also essential.