If cost is prohibitive, consider free transport phenomena textbooks like:
The 7th edition includes both systems. Practice converting between them—it is a key engineering skill. If cost is prohibitive, consider free transport phenomena
Species transport in moving fluid streams. If cost is prohibitive
The 7th edition is packed with modern examples, including: and mass can all diffuse
Purchase a physical used copy (older 5th or 6th editions are $20–$40) and scan key chapters yourself. This is 100% legal for personal use (though time-consuming).
A major strength of this textbook is its ability to teach the between the three modes of transport. Because momentum, heat, and mass can all diffuse, they follow similar transport laws—moving from high to low concentration or temperature, often using similar governing equations.