I have personally bought these tutorials, both the game engine tutorial and the alterative tutorial using the game engine to build a game (recently i have also got the networking tutorial as well)
In my personal opinion if you are wanting a set of tutorials to show you how to create a fantastically rendered terrain with prepass etc etc these tutorials are not for you.
However if you are looking for a solid introduction to game development with c++ look no further. The tutorials take you through the very basics of not only coding a game engine but understanding what you are doing and why you are doing it.
Yes they may be a bit out of date but then again everything is out of date the second its published.
I would certainly recommend then, i think the detail they go into is fantastic and definitely good value for money.