Definite Integrals Courses
University of Pennsylvania via Coursera Интегральное исчисление
National Research Nuclear University MEPhI via edX Calculus 1
Udemy Integral Calculus
Brilliant Integrals - Antiderivatives
patrickJMT via YouTube Integral Calculus
Eddie Woo via YouTube APEX Calculus - Integration
Sean Fitzpatrick via YouTube Calculus I
YouTube Integration
YouTube Intro to Integration
Math at Andrews via YouTube