Hii Kiran!
You can study p- block elements chapter from ncert as it is the base for most of the exams. But, if you feel difficulty, you can refer to books such as Dinesh publications, S. Chand publications or Modern ABCs for the chapter. See, frankly speaking, there's no such trick for it, but as you know, practice makes you perfect, so practice more. Read a topic and solve questions related to it. Start with reading questions on the topic and then start with the topic, so that as you come across those sentences, you will eventually pay more attention to it as you remember the type of questions asked now. This will help you focus more. And do not worry. Make small notes. Revise everyday. Do not collect your queries and get them solved as soon as possible. Hope this helps.
Good luck!