where I can prepare IPU CET for admission?

You can prepare for IPU Cet BBA Examination by yourself and taking help from Internet. At this situatuon it is also difficult to go out for taking tuitions. So you can prepare at your home. First you should make a proper and programmatic study schedule which you'll follow throughout your preparation. Then go through the syllabus. Allott one day for one topic. Understand the basics, and do exercise questions, then do complex problems. In English language and comprehension part, Grammar and Vocabulary will be asked mostly. So you can prepare it from your class 9-10 English Books. For General Knowledge, prepare from Manorama Year Book or Lucent's GK. Read newspapers daily thoroughly. Now for this section i.e. Logical, Analytical Ability and Aptitude, you have to do some work. You can take help from YouTube. Many mobile applications and websites like freshersworld are there, where you can practice aptitudes. Books you can follow, GGSIPU BBA Bachelor of Business Administration Common Entrance Examination by Arihant's. Solve sample papers, and last few years' exam papers. Give mock tests once done with the syllabus. http://bschool.careers360.com/articles/ggsipu-cet-bba