Watch the Adding the Major 7th online guitar lesson by TrueFire from Jazz Guitar Greatest Hits Vol. 1
Lesson Source: Fareed Haque's Jazz Rock Workshop
In this playing example, I introduce the Major 7th to the basic minor pentatonic scale. Try experimenting using it leading up to the root, or leading down to the b7.
You can also try to connect chromatically - 6, b7, 7 to I. Also try landing on the Major 7th on a strong beat and then resolving down to b7.