I would greatly appreciate some guidance!

I have a drop down list which contains a dozen or more items (text). I would like it so that when one of the items is selected, information will pop up in another cell (or series of cells) that contain information related to that choice. For example, the list would contain: "Material A", "Material B", etc. If the user selects "Material A" from a drop down list in that cell, a list would appear elsewhere on the sheet with specific instructions related to "Material A".

How can I make this happen?

I am new to this forum and have a limited working knowledge of excel, but am willing to learn! Thanks