It’s better you start off in a methodical fashion, rather than jumping to tips and tricks. Here’s what I recommend you to do:
- Purchase R.S.Aggarwal’s Quantitative aptitude- it’s not very advanced and will be able to provide you with basic formulations and quant techniques. Maintain a rigorous schedule and practice a chapter every day. Revise topics and solve problems periodically. Visit websites like IndiaBix Aptitude Questions and Answers for more problems.
- Once you are comfortable with this book, then move on to the CAT preparation series books by T.I.M.E. institute.
- A few days before the campus placement tests, try and solve several company question papers- some of them will be available online. You can also try asking your seniors. Solve problems from D.E.Shaw & Goldman Sachs first round tests- they will be extremely challenging and probably the toughest of all the placement tests you are likely to write