This is something I have never attempted. In order for my new mod to begin I want the player to either be drugged or knocked out by an NPC and wake in an unknown place i.e. my world. I don't know where to start really, Help appreciated on this new venture and thanks.

Take a look at the quest for Redwater Den. Once he has drunk the Redwater Skooma, the player falls unconscious, wakes up in a cell and it take some time to him to fully recuperate.

I think the Night to Remember Quest does this also. The player has a drink and wakes up in a temple in Markarth.

Yep and there is the DB first quest, when the player goes to sleep and wakes up in the abandoned shack.