You can take a Lonely Planet and plan your own trip, you can call a travel agency and let them provide you with a detailed travel plan and multi-day tours, or you can take the more interactive route and book a private tour with one of the humble Nepalese locals. Personal experiences like these can range from taking you on hiking tour into the Himalayas, to showing you around their most beautiful Buddhist and Hindu temples and being a personal source of information to which you can direct all your questions. They can be a few hour tours of a cultural heritage site, or one of the more engaged private guides will even take you on a motorcycle tour through their region for multiple days.
Have an authentic meal at a local families home. Experience the real food of Nepal.
Enjoy a trip through the eyes of a local. Get the ultimate tour in Nepal.
Everybody's good at something! Learn from Nepal locals and their cultures.