I think the entire forum kind of already is a 'tutorial hub' post. You just have to go to the tutorials section and browse. Or use the search function. Or make a new post with a question, in which case anyone will give you an appropriate answer with a link to whatnot if needed.
This is good because each new post has it's own title, and it's own discussion or conversation going on.
Centralizing everything under one big topic would be strange I think, and have a few downsides.
That said, Megalomaniak started this list a while back, but the truth is that it's hard keeping it up to date and to know about every tutorial out there.
Also, in my exp, many ppl will just ignore stickies or topics like that and make their own posts anyways, and that's perfectly ok since it's a part of the forum.
If you wanna start a new thread, as Ross said, you can. You can use the general chat section or the tutorial's Section, depending on the tone you take with this.