Please do not use LaTeX. If your textbook is supposed to have special layout needs, you will have a hard time with LaTeX. Tables are a real nuisance in LaTeX as well - normally you have your data in some other tool like Excel or some Jupyter notebook or CSV. Turning the data into a nicely looking and well-placed LaTeX table is not straightforward. Sure, there are specialized LaTeX extension packages for a lot of functionalities, but you will need time to get familiar with them. I would just start with MS Office or LibreOffice - both offer sufficient functionality and if you need more specialized tools, then those tools usually have an import function for DOCX /ODT files.