8 Easy Steps to Learn Manual Mode for Nikon D7100
Step 1: Pick up your Camera and Start the Timer Step 2: Turn the Mode dial to point to M which means Manual Mode Step 3: Point the Camera where you find good light Step 4: Check the Important Camera Settings
Step 5: Check the Camera Metering indicator Step 6: Press the Shutter button Step 7: Achieving the Proper Exposure Step 8: Make your very first Photograph using Manual Mode!
For details of above steps check Nikon D7100 Manualhttps://guideusermanual.com/product-name-d7100manual&po=4302&lang=English