Its good you have completed your B.SC from PU in 2016. I am sure you should have the habit of reading books, articles from the year 2016. The Preparation for the SSC Exam should be easy when you have the habit of reading,writing,speaking,Listening related to subjects from your friends,colleagues circle. Most people
go for a coaching class for the SSC and then take up the exam. Some people do not opt for the coaching class and instead they prepare by themselves for the exam by reading the SSC coaching books, and also with the help of the old question papers, they tend to practice the exam questions and Answers.
If there is a reading habit you can make one by reading the SSC related books, that will satisfy the need for understanding the subject. Later you can pick it up for the competitive exam and study easily for the exam. Trust in yourself, and believe that you can study, spend some time doing exercises to keep the mind healthy
and good to take up any exams.