I was searching for a book on meteorology and weather...something along the lines of a college level introductory book and came across "Practical Meteorology: An Algebra-based Survey of Atmospheric Science" by Roland Stull. It's made available free under the Creative Commons License.
I started reading it and found it informative. Technical but higher math not necessary.
You can download individual chapters or, like myself, download all the files and combine them into one handy PDF book.
https://www.eoas.ubc.ca/books/Practical_Meteorology/