Why are you citing also "script"?
To add to the confusion...
There is currently a discussion to rename "Expression Manager" into "Expression Script" because it explains better what it actually is. It is a script language that allows you to "program" certain things (Expression). It is the same thing. I am just preparing already in case it gets renamed in the future. Then the mention of "Expression Manager" might not make sense to everyone.
Expression Manager looks scary at the beginning, but there are good explanations in the manual, especially look into "micro tayloring", which is what you mostly need.
You probably will need some time to get your head around it, but then what you are trying to do is not a simple thing. Once you have the idea, it will be probably really quick.
You can use text display questions with expressions in it to deliver your advice. Once you have started and run into specific problems, you can always come back and ask specific questions. But first you should read through the pages about expression manager in the manual and download the example LSS files. this will give you a very good base to write your own expressions and create your taylored report at the end of the survey.