ISSB is 2 + 2 = 4 affair, if you know how to Prepare and do ISSB Tests in right way and if you can work hard to Prepare for ISSB Tests. Every Exam requires Preparation and read how I was successful in ISSB Tests. These two books will guide you "How to prepare for Initial Test and ISSB Tests. Before applying and Initial Selection Tests Download and Read Initial Test E Book and after passing Initial Tests, Download and read ISSB Test E-Book