Hi candidate,

You can start the surface tension chapter by gradually learning from the basics such as force due to surface tension, pressure in a bubble due to surface tension below and above water and the role of surface tension in day to day life activities.

Since in the class 11th examinations the questions are mostly focused on derivations and a bit of numericals, hence the NCERT books can definitely help you to get a good score in the exams.

Hope that this answer helps you