The link given by @Nick provides a good non-VBA solution for where you want to keep the original data intact.
If you want to keep the original data and summarize it somewhere else, you can use a method I detailed in a previous post. This would require you to make a list of all unique order numbers somewhere, and then use the CCARRAY UDF in the adjacent column. If the original data is on Sheet1, and the new summary list is on Sheet2, you would use the following formula to get the product information for the order number in A2 on Sheet2.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.