Hi Samira,

For the theory part of Organic Chemistry, you can refer to Solomons and Fryle and LG Wade (Organic Chemistry). For solving questions, you can select any book among the following :

• Advanced Problems in Organic Chemistry for JEE - MS Chouhan
• GRB Advanced Problems In Organic Chemistry for JEE (Main and Advanced) - Himanshu Pandey
• FITJEE-GMP

Himanshu Pandey, combined with MS Chauhan will solve all your conceptual doubts. Be sure to solve all NCERT examples, internal plus back exercises.

Hope it helps!