If dreamed you that you talk to the grandfather, then such dream means what is with you or to someone from your relatives there will be a trouble. If in a dream you receive news that your strict grandfather is going to arrive to you, then in real life you made a certain act for which very you regret. To see how the grandfather is engaged with grandsons, symbolizes your aspiration to family pleasures.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.