Go on you for having a go!

Decrepit is correct about the equipment being quite old, but the board itself with probably work well to get you going and learn the basics in a nice safe place with light winds and flattish water. A smaller sail and a more modern boom will certainly make it a LOT easier, and if you take to the sport, you will probably find the desire to go to a more modern, planing, shorter board in the not too distant future.
I hope you enjoy the experience and get hooked like the rest of the inmates here.