Hi,

I suggest the following:

Do one full case from the mck website in 60 min. Check your score. Target score is 22 out of 26 correct. If you do 17-18 correct you have great chances to improve it quite fast. If lower - it will take couple of months

If your score is high:

• Buy Viktor Cheng test prep program - best materials I've seen so far. Works also for express prep.
• Practice your math. Check exercises on Cheng website. Key things - multiplication of 2 digit numbers, operations with zeros and division (Learn division table, ie. 1/8 = 12.5%, 8/9 = 88%, Learn up to 8/9)
• Do the 2nd test and check the score

If your score is low you need fundamental prep:

• GMAT IR, quant and verbal parts
• PST-like tests available online

Best,

Vlad

I found the Fless video sessions on Youtube very helpful