Hey @Suhail6,
Welcome, and we are glad that you could become a part of our community 
In addition to Paul Sir’s excellent response, please check out the “ML/DL textbooks” in this thread, and Section C of this thread. These contain some excellent advice and resources for beginners who are just starting out in their AI Journey.
As of now, all the short courses that DLAI offers are revolving about the “Generative AI” space, and how to use state-of-the-art models like ChatGPT, Diffusion models, etc to develop Gen-AI based applications. All of these courses are within a duration of 2 hours each, and if this field is something that interests you, then you can definitely check out these courses.
Another good thing is that, all of these courses, at present, can be enrolled in for free. You can find an exhaustive list of short courses offered by DLAI here. For pre-requisites, please make sure that you are familiar with Python.
Cheers,
Elemento