No problem at all. I really enjoy helping new riders find the joys of riding strapless.
I would definitely recommend riding without your fins for 2 reasons. The first, is learning to ride your skim with proper technique. Even though it will be more difficult to ride at first because the board will feel super loose, and almost like it wants to come out from under your feet. However, believe me when I say that the fins are not necessary, especially once you learn the proper technique of riding the rail of your skimmy and getting your stance and kite position right. In some ways the fins can almost cheat you of developing a good skim technique because you don't really feel a skim fully until you ride it fin-less. Once you have your skim mastered then you can add fins when you want them for extra grip or waves. Lets also not forget that you look way cooler to all the other people riding without straps and fins!!
Second, if you remove your fins you will find it much much easier to learn to slide your skimmer and learn shuvits. Also, removing the fins will make it a bit easier when riding your board backwards and when you are learning to turnaround. I am sure your board will work backwards. Some work better than others depending on the rocker line, etc. , but you should be fine - just a mental hurdle because the board looks directional - don't worry about that.
Wax vs. pads is a matter of personal taste. I really like pads as they have just as much grip, if not more, and you don't have to re-wax your board all the time. Plus, when you start learning ollies they protect your board from dings and most importantly, your body to cushion the impact. The only real drawback with pads is that your can lose some of the feel of the board, so whatever pad you use make sure it is relatively thin or only a single density especially for your front foot. Tail kick pads are nice for the rear. If you do put pads on, make sure to remove the wax fully and then give your deck a rubbing alcohol treatment to get the pads to adhere well.
The 180 slide is pretty easy and there are a few ways to do it. If you can hop from regular stance to toe-side with your TT that is a good start. If you watch the video at approximately 1:40 you can see me initiate a 180 slide before I complete a handlepass. As you are riding along head towards the kite or downwind a little. Then take your back foot and push it towards the kite and your front foot should push away from the kite. Make sure to keep your kite with power in the direction your are going. It should not be so low that its off the water, but not so high that it pulls you off your board or slows you down too much. Ideally, it should end up being smooth that you slide 180 and keep about the same speed. Once you are riding toe-side get the feel for doing that. It will take some time to get the feel for it as it is a bit different that doing it on a TT. Again, the nice part about removing your fins is that there will be no resistance and the slide will be easier to do. Prepare to fall a lot, but don't worry about it - that is half the fun of learning something new and it makes it all the better when you get it.
Keep in mind that once you feel comfortable doing this trick you can turn it into a transition, but sending the kite the opposite direction and since you are riding toe-side with the board backwards you can turnaround and have the board facing the right way and be in normal stance.
The shuvit is the same movement, but instead of sliding with the board you are going to rotate the board 180, but stay with your same stance. The trick to this move initially is to slowly bring the kite to just above your head, but not behind you in anyway. Once the kite is about to reach 12:30 its time to initiate the shuvit it. The idea is to have the board go 180 and your ride off in the same stance and direction. You can do the 180 by pushing or pulling with your back foot and then doing the opposite with your front foot. Do whatever feels more natural to you. It is not necessary to try to pop the board. At this point you are just try to get the board to move 180 underneath your feet. The reason you want the kite high above your is that you can get a tiny bit of lift from the kite just enough to lighten your feet and let the board spin 180 underneath you. Once you have completed the spin quickly dive the kite back to 2 - 2:30 to generate some power and keep going the same direction. After you have pulled it off don't forget to look around to see if your friend saw you and you can even let out a hoot!
The Shuvit will probably be harder for you to learn and it does take some time, but in order to progress you have to get the basic shuvit it down. Plus, they are freaking cool.
You can see me do a shuvit @ about 1:20 of the skim video. Unfortunately, its a bit far out to see close up what is going on.
Let me know how you are progressing and I can give you more pointers. If there is anything you are not clear on I will be happy to explain further. Todd and I will have basic skim tricks and more advanced ones posted in the next few months. Good luck and rip it strapless.
BTW - How did you find LTS?