Thank you for your question about the use of "below", which ,as you note, is an adverb or a preposition. You asked whether the following senttneces aew correct:
1.The below information is for your reference.(Not correct because "below" here is being used as an adjective , not an adveb; it should be "information below:.)
2.Below is the information for your reference.(Correct)
3.Please find the below information for your reference.(Not correct. See#1 for explanation.)
4.Please find the information below for your reference.(Correct)