Data analyser

May someone please highlight to me how i can go about solving my prob. I do not want the code because i will not learn, but just the scope or an algorithm. so here is my problem:

i want to create an application that analyses trends in data and if there is an anomaly, a trigger sends an email

Do some research about your problem. Make a design for the program, write some code, compile the code and test it. Fix the problems and repeat.
If you have problems, post your code, the full text of any error messages and your questions.