Research binoculars. You need a high-quality, comfortable pair. Go to a camera or sporting goods store where you can try them out. The viewing power of a given binocular is described using a two-number equation such as 7x35. The first number is the magnification and the second number is the size of the objective (front) lens. Bigger numbers allow for better images. Understand that as magnification increases, the field of view shrinks.
Decide on your camera preferences. A large camera with a telephoto lens will get great shots, but is also heavy, delicate and complicated to use. A small camera is easy to carry but may not show animals and scenery well.
Purchase mosquito netting (to put around your bed) and bug repellent from a camping supplier.
Select versatile clothing, such as lightweight nylon pants, that will keep bugs away and dry quickly. Consider long pants that you can convert to shorts by zipping off the legs.
Research your destination's climate. It may be hot during the day but cool at night.
Assemble your electronic gear, including cameras, watches, radios and cellular phones, and note all the types of batteries they use. Purchase plenty of spares before you go.