So, let us start sharing 

EasyCal, Easy Tricks for Math and Algebra
I know how hard for someone to get along with maths so this will help you for sure!
Let me resume what the authors claim this does:
- How to do long calculations in few seconds. That too mentally .
– How to avoid making any calculation errors (Checking Techniques)
– How to impress anybody with your superior Math skills.
– How to get better grades / Score in any Math test.
– Helps you clear Math or Data Interpretation section of competitive exams like SAT, ACT, GRE, GMAT, MBA, Banking (P.O or Clerical Grade ) etc where you have calculate the answers in a limited time.
– Specially useful for businessmen or professionals who need to be good with numbers.
– Takes care of your day to day math needs like quickly adding shopping bills, calculating discounts, checking your credit card / bank statements etc.
– Helps you develop interest and much needed confidence in Math.
Links available in the forum:
[Maths] Easy Tricks for Math and Algebra
Enjoy and Review if possible 
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