NUnit Courses

Building Test Automation Framework - Selenium, C# & NUnit
Coursera Project Network via Coursera

Data-Driven Testing (via spreadsheet) with Selenium & Nunit
Coursera Project Network via Coursera

Data-Driven Testing (via Database) with Selenium & Nunit
Coursera Project Network via Coursera

Unit Testing for C# Developers
Udemy

Introduction to TDD in C#
Udemy

Beginners Guide to Unit Testing with NUnit and C#
Udemy

Introduction to NUnit
Test Automation University

Selenium in C# - Setup Simple Test Automation Framework
Udemy

Introduction to .NET Testing with NUnit
Pluralsight

Introduction to .NET Testing with NUnit 3
Pluralsight