Using Boolean Search Operators are a lot easier than it first appears. There’s only a few basic ones, with a cheat sheet* you can get started right away.

*Stafflink’s New and Improved Boolean Search Cheat Sheet – Stafflink

Boolean Search – Webopedia

Database Search Tips: Boolean operators – MIT Libraries

Boolean Operators and Modifiers: Effective Search Strategies for PhD Students – Resourceful Scholars’ Hub

Basic Boolean Operators Explained – Boolean Black Belt

Boolean Searching and Other Tips for the Web and Online Subscription Databases.pdf – Shaler ASD

Google Search Operators: The Complete List (42 Advanced Operators) – ahrefsblog

Refine Web Search – Google Search Help

Google Search Operators including Advanced Operators – MOZ.com 

Google Search Tips and Modifiers.pdf – Lane CC Library

GoogleSearch-Infographic.pdf – Canva.com/app.box

Google Search Modifiers – Google

30+ Bing Search Operators – SEOSLY