Don't hesitate to ask questions or share what you have through photographs. I see you are like 90% of the hobby, beginning with Whitman folders, life coming along pushing them aside and forgotten only to be found years later rekindling younger thoughts and vision.
Welcome! Whitman folders are a nice start. When you insert your coins wear cotton gloves. It is impossible to insert them without applying pressure. I have seen great coins develop a permanent oxidation finger print from their original owner. Happy hunting.