First of All congratulations for clearing your css exam.
I am actually a final year mbbs student and I am quite interested towards css and I don't know where to start... And I am quite shy to ask someone in the public. However, if you don't mind can you please tell me how did you started like which books you read and videos you watched. Which subjects did you preferred ( the subjects you listed are also of my interest ). Can you also share your notes with me? I know I am asking alot from you but I just want to take a start . Thanks