May be there are enough places in the site where OOPS concepts are explained. But in any case we can always post some threads in this forum too.
I guess it will be a good idea to start some threads on basic concepts like Polymorphism, Data Encapsulation and Inheritance.
Feel free post your knowledge in any of the OOPS concepts.
Ofcourse you can ask doubts if you have
Cheers,
Kalayama