Read the manual that came along with your camera, and refer to the guidelines to get a good hand on your primary equipment. Once you get to know how to navigate through the manual settings, you'll be able to customize every shot as per your liking.
A handy waterproof backpack, along with comfortable shoe wear are a must-have for a quiet predatory walk near your subject. A compact lightweight tripod can help in getting the perfect steady shot.
Adjusting the proper shutter speed manually for capturing the perfect shot will take diligent practice.
You can use the Auto ISO setting, but it may sometimes result in noise factors. After taking a good amount of pics, you'll get a good idea as to what the ISO value should be set at.