As the leaves change as the air turns cooler, it is a great time to get outside and use that camera. The colors in the trees make great color and as the day & night temperature change, fog can be there to add to your landscape photograph.
A couple of tips:
Use a tripod
Use a ND Filter or CP Filter
Shoot during the sweet hours or cloudy days to beat the harsh sunlight (Lighting is one of the most important parts of taking photos)