Not to slam your comment in any way, but if you feel SketchUp is a horrible experience, you might leave it for those of us who don't feel that way; there are quite a number (I think they say around 30 million of us) who are pretty impressed and pleased. It's definitely the most intuitive software I've used at my job (interior design/drafting} and I thoroughly enjoy every project I get.
Granted, every program should do it's best to encourage new users, but I feel SketchUp has done fine with that too. After all, they set up this whole community with that in mind. I don't see how integrating learner "slideshows" into the software would be a good idea; why don't we leave the software space free for the real work, and watch the slideshows somewhere else, like online or something. They are available, last I checked.
Anyway, just my thoughts; have a great day!