Microsoft did precisely that, and there are extensive tutorials available from within Access. One thing Microsoft does really well is documentation. It really is excellent quality, and it's all there under the Help menu.

But, obviously mine is a minority point of view as there are a ton of tutorials out there on the web. A number of folks here have some very comprehensive websites, though I'm not sure how many of them are Access oriented. But definitely check the profiles of people who post frequently about Access.

I'm not using Access at the moment, and since the last version I can figure out is getting pretty long in the tooth, I'm going to have to demur. I don't think a forum like this is great for comprehensive tutorials, it's more of a Q&A format, but something like a wikibook might work better.