In addition to tools you will want to stock your box with a variety of baits and terminal tackle.  I recommend the following:
 
A large supply of hooks of various sizes.  They generally come in bags of at least a dozen.  I advise keeping a variety on hand from each size from 8 all the way up to 2/0

A supply of snap swivels for attaching the hook and two or three way swivels for preparing specialized fishing rigs.

A large assortment of jig heads and jig bodies.  You should always have a variety of different sizes, shapes and colors on hand for fishing.

Several different spinnerbaits.  Spinnerbaits are the best tool for catching Largemouth Bass, the most popular species of game fish in freshwater.

Some larger lures such as spoons and crankbaits.  Again you want to keep a wide variety of baits on hand for specialized fishing.

If you will be live bait fishing you will need some bobbers

A fisherman needs weights of various sizes to keep the bait located where he desires.
 
This covers most of the equipment the beginning fisherman will need.  There are certainly items you can add as you go.  A landing net for instance is very important when fishing for certain species.  A pair of Kevlar gloves is also a must if you will be handling large fish that have either sharp teeth or sharp gill plates.  This package of equipment I outlines is designed for freshwater fishing.  When fishing in saltwater you will need a different set of equipment.

To get the full "Fishing Tacke List For The Beginning Angler" article you'll need to download it here.