When installing track lighting you should caution yourself to make sure that you get everything required to set up you lighting system. It is also good to check for modification pieces so that future alteration to your track lighting are possible. Different track lighting kits will offer different setups and may give you some or all of what you're looking for so search around for something that will give the appropriate system for you.
With the simplest track lighting setup you should get the track and the lights. The number of lights and length of track will vary depending on the system you wish to setup. In order to install your track you will need the proper fittings. These fittings should come with in your track light kit and can vary in style. Following the manufacturer's instructions will make sure that your fittings are properly installed.
When it comes to the lights you'll more than likely have to provide your own bulbs. Choosing between different types of bulbs can be a very important decision for your lighting system. There are bulbs that will last longer than others as well as give different hues of light. Subtle changes in tone from cool to warm can vastly change the use of your lighting setup.
Many kits will give different combinations of track and different means of connecting track, which can be helpful, and more user friendly for the home improvement enthusiast.