This is really an awesome game! When I first started playing I wasn't that great, particularly at the Advanced Course. In fact, I often wondered how they expected anyone to get thru however many stages there were. With practice, I was able to nail down the technique and finish out the 8th Stage on Advanced, man was that a good feeling. Granted, there wasn't much time left and the score was still pretty low, but nonetheless there was improvment. I worked from there to really perfect it and learn all the ins-and-outs of Skateboard Arena. With a bit more practice I was able to click off some pretty impressive scores (note: I have yet to use the Stage 6 "Shortcut"). This once again goes to show you that with practice, comes improvement and mastery. Now it is rare for me to finish with a 3-Star Rank.
The Beginner course just goes thru and teaches you all the basic moves. In the Advanced course you put all those to the test and attempt to execute them in succession to nail a good score. I have to say I like Advanced the most. Beginner really isn't much of a challenge...Advanced, even for a good skateboarder, can still throw you for a loop and offers a ton of replay value. I haven't done the Free course much, but you can either have fun, work on a set skill (like jumping off the half-pipe to a new platform for Stage 8 on Advanced), or just go for a high score. Obviously some portions, like the half pipe rows, are more condusive to getting high scores.
Overall Skateboard Arena is a great activity and one of the all star activities in Training Plus. It was a great challenge and in all honesty still is as you shoot to overtake your personal best. I have yet to get tired of this exercise and will likely to continue playing it for years to come.