Take your formulas to the next level by checking out the great formula resources below.
Trailhead - Formulas and Validations
Learn the basics about Salesforce formulas, validation rules, and the native formula editor. Do hands on challenges to test yourself.
Trailhead - Advanced Formulas
Learn to work with the different formula field types, to build advanced formulas, and to troubleshoot formulas. Do hands on challenges to test yourself.
Salesforce Developer - Examples of Advanced Formula Fields
A list of advanced formulas grouped by topic.
Salesforce Help - Calculate Field Values With Formulas
A full overview of formula field features. Make sure to check out the limits and restructions and the best practices sections.
Salesforce Stack Exchange - formula Tag
Salesforce Stack Exchange - formula-field Tag
Get your Salesforce formula questions answered, or find similar questions that have already been answered.