Ways to give hints and clues without sounding like an orge…unless the NPC is an orge.
1. Don’t use prophecies
2. Mysterious strangers…we all know Gandaf.
3. Make connections logical…this key fits this lock…in the other dungeon.
4. Don’t over explain.
5. Let them talk it out and come to a conclusion.
6. Don’t interfere with their logic sessions…sit back and marvel.
7. Be consistent in your DMing.