Keep in mind that the folks that have responded in favor of you getting this boat all have years, or possibly even decades of sailing experience, so they may have forgotten what it's like to be a total newbie. My 2 cents - a Hobie Tiger (or any high-end performance cat) is probably about the worst boat a beginner could choose... maybe an International 14 or an 18 foot aussie skiff would be worse.
These boats are designed to be over powered in anything over a light breeze. They're complex to set up, and if you rig them wrong, you could have major handling issues. They're fragile and expensive and are simply not designed to be dragged across beaches, have the sails crumpled or flogged, or handle the abuse that a beginner simply can not help but put them through. In a nut shell, they're advanced high-performance boats that simply are not designed for total novices. The first time you drive this boat into the rocks, get tossed through your mainsail, or spend half the day on your side drifting away from shore, you will probably regret this purchase.
This is kind of along the lines of handing over the keys to a corvette to someone who just got his learner's permit. Yea, the steering wheel, gas, and brake are more or less all in the same spot as mom's station wagon, but when you hit the road, it's a totally different story.
Sorry to say that even though this may be a great deal, there are much better boats (and this definitely includes catamarans) for you to learn your fundamentals on and still have a great time.
Newbie+Tiger=very expensive repairs/replacements