A video might help you too - such as 'beginner to winner' by Gem Hall, or some of the RYA ones I can't currently remember the name of. Nothing will help you more than time on the water though.
Gear wise, it depends a lot on how fast you learn - in your case hopefully very fast!
I'd recommend a minimum of 2 sails, around a 6m & 5m ish. As for boards, you'd have a choice of getting a bigger one with a retractable daggerboard (like a keel)which are easier to learn on, but may limit your progress after a while - or a smaller one around 120 - 150 litres of volume, which would be a fair bit harder to learn on, but a lot more fun once you get the hang of it.
Perhaps by having some lessons you can get yourself to the level where you can buy the smaller one without too much worry?
Good luck! Enjoy!
EDIT** - further to this reply, see my other post of stuff I am selling. You may want to consider the 5m & 4m sails, the 400cm mast, carbon boom & waist harness. I'll check in mast feet/ extensions etc. Then you just need a board & wetsuit.**
(see Ern - no mention of those 'other' packages! Hehe

).