Don't worry, dear Ali is right, Akber Lagari's book is best. Dont depend upon notes because in css books are better than redymade notes. I also got 50 marks in my first attempt by just reading this book and not whole book i just read only important topics due to lack of time. This time hope near 70 to 80. Because i ve some other authers like Dr. Nabi Bux Balouch, Memon Abdul Majeed Sindhi.