Pls help me for this unit . i get very confuse . what i do pls suggest mi .nd pls tell mi the importance of this unit

Dear Student
Study the concepts thoroughly. Practise as many problems as you can based on each concept. Clear doubts progressively. Study the derivation, it will help in numericals. List down important formulas in a sheet and revise. Important concepts are : electric charge , field , potential , Flux , Conduxtors