Explore the fundamental concepts of limits in calculus through a comprehensive 90-minute tutorial. Learn to evaluate simple limits using substitution and factoring techniques, understand limits involving trigonometric functions, and grasp the applications of limits in tangent lines and velocity problems. Dive into the formal definition of limits, study limit laws and their practical use, and master the Squeezing Theorem. Examine left-hand and right-hand limits, and conclude with an understanding of continuity in the context of limits. Gain a solid foundation in this essential calculus topic through step-by-step explanations and practical examples.