I am so sorry for the loss of your father. He will always be near you, watching out for you, and loving you.
If you can, please read the book "Hello from Heaven" by Bill and Judith Guggenheim. It tells many ways that your father and other passed loved ones can send you messages from the Other Side. You can find the book in your local bookstore or on Amazon (online.) You may also find the book in your local library!
Also, click on "About This Website" -- button on the left. Then click on "What is an ADC?" and "Sample ADC's."
ADC's are After Death Communications from our passed loved ones -- things like seeing a license plate with a message to us, lamps flickering at certain, special times, hearing a special song with a message when we get into our car, seeing a bird at our window or a deer acting differently than usual, etc.
ADC's are little reminders that our loved one's spirit is not dead, but still alive and watching over us. They will always love us! :) When we learn what those messages "look" like, we can be reassured that our dear ones are still alive and well, and still care very much about us.