Here is a good-short-informal summary of the asymptotic analysis of algorithms.
At the end of the video Big-Theta and Big-Omega are mentioned, which we do not cover in this course. More about them in the "Design and Analysis of Algorithms" course inshaAllah.
A short video that explains informally what an algorithm is and how to compare between algorithms.
For any algorithm that we design, we should ask ourselves three questions:
How quick is the algorithm?
How much space does it require?
Is it correct?
In this course, we will concentrate mainly on the basics of answering the first question. The course "Design and Analysis of Algorithms" may go deeper in answering all the three questions.