Go to Menswearhouse.com, type tie a tie in the search block and they show you three or four different types of ways to tie. It's the only way I can remember how to tie my husband's tie on the rare occassion he needs one!
Gosh, can't remember the last time I tied Hubby's tie. My Grandfather taught me how when I was little. Funny aside here, my Mom's Dad (not the one who taught me how), worked for a funeral home when he was young. People used to ask him to help them tie their ties and the only way he could do it was to have them lay down.