your car looks fantastic! I agree with most all the posts in this thread.....these cars can be a handful if you jump in and do not know what your doing. It can get real ugly real quick. As mentioned I would read all you can and get a good base of how these cars work,then when you start to drive it more in the warmer months it will not be so hard to understand what is going on. If you plan to keep the car mostly stock as you have it, it really will be no problem maintaining it. Also keep in mind if you do start to mod it getting the proper monitoring equipment is a must!!!! When I first started playing with these cars in the late 90's I was ignorant and basically listend to a supposed local "Buick guru" and just bought what he said to buy. This was the biggest and most costly mistake!
These cars can be tons of fun, they are older so there will be gremlins ans sometimes they can be difficult to find. This is where the frustarting part can be, but if you know the principles and you take your time you will find the problems and you will see that there is nothing too difficult.
Good luck and welcome to the site.!