I agree a lot of dead links/capx. For some post you don't need to have capx if it's explained there. There's still lot's of people that use c2, so I'm sure not half of the users have switched to c3 only or use it (cuz it ain't that perfect. nothing is)
edit: also just make a post to request those capx, believe it or not people still use construct 2/3 since 4 to 5 years ago.