I'd recommend for you to invest; the game is more fun with advanced equipment.
Some of the recommended (though not cheap) equipment, suitable for beginners, might be the Rapture club set ($27), Ping Redwood putter ($6), and GI-D balls ($0.50 per 3 balls that last a few 18-hole rounds). The benefit you'll feel with these will be MONUMENTAL.
If you don't want to invest that much to start with, you can just upgrade your driver for $1–$8 & get the Tour Starter set ($7.82), but the benefit you'll be getting from these clubs will be appreciably lower, and so will be the fun from playing the game, perhaps.