Purchasing a Pliers Set is a good way to start if you are a beginner and unsure of what tools you need. There are some very basic sets which just give you the essentials, or other larger sets include useful tools you may not have considered.
Sets give you savings over purchasing the tools and case separately, so they make a good base. I like to have two identical pairs of Chain Nose Pliers; these are available separately, so you can add them or any other pliers to your collection too!