What is a good book to learn C++ along with its OOP approach? I have programmed in C for a few months. I do understand vaguely what a 'class' is. Still I'm unaware of concepts like inheritance, polymorphism, etc. Suggesting video lectures is also highly appreciated.

Thinking in C++ (Volume One) by Bruce Eckel is an introductory book that puts more emphasis on OOP than other introductory books. http://www.amazon.com/Thinking-Introduction-Standard-Volume-Edition/dp/0139798099 That said, C++ is a very deep (difficult) language, and it is multi-paradigm, which means that after learning OOP you still have to learn a lot about other things in order to be a productive C++ programmer. To learn C++ effectively, it is necessary to have a meaningful list of exercises (mini-tasks), as well as more fully-developed code samples (to illustrate the better solutions to those exercises). Learning OOP is like a long journey. One will learn , http://en.wikipedia.org/wiki/SOLID_(object-oriented_design) before one can claim to know the basics of OOP. That said, it is only after a lot of programming experience (and exposure to code written by other people) that one knows how to apply those knowledge. Some people would say that C++ may not be the best language for beginners to learn OOP concepts, because of its verbosity. Case in point is that the shortest code sample to demonstrate the usage (and necessity) for a design pattern, is much longer in C++ than in other languages. After learning C++ a while, you may consider learning some Java.

https://www.coursera.org/course/cplusplus4c Along with OOP, it deals with elements of generic programming. The course is tailored for people familiar with C and want to learn C++

You can refer: C++ The Complete Reference- Herbert Schidlt. This book has all concepts covered explained in a easy. After having a good understanding of the concepts you can try  Expert C++ -Herbert Schidlt Refer NP-TEL videos for getting your concepts clear.

If you are a beginner ,Try "Headfirst C++ " Its really  interactive and satrted with basics,step by step,after that you can go to any book like "Hebert Schildt's Complete Reference in C++"

I would suggest this book by Bjarne Stroustrup: http://www.amazon.com/Programming-Principles-Practice-Using-2nd/dp/0321992784/ref=sr_1_1?ie=UTF8&qid=1434501559&sr=8-1&keywords=programming+using+c%2B%2B&pebp=1434501560634&perid=0TZQ1ZQG48T5QDGQDQ7F

http://gabrielcojocaru.com/the-definitive-c-book-guide-and-list/