“If your looking for a solid defence to d4 which doesn’t require too much learning then this book is for you.”
I recently saw this comment on Amazon about a particular opening book. I then did some research and noted that once you play this opening there are something like 14 possible lines for White on the very next move, all featuring diverse themes and lots of tactical lines.
The author had probably put a lot of work into this book but might not have done enough teaching to understand what the intended readership would be able to manage. As for the reviewer, he might have been associated with the publisher or been a friend of the author. This kind of thing happens a lot.
Meanwhile the selection of overly complicated openings is actually a very common problem that I might revisit at some point. As for anyone wanting an ECONOMICAL defence against 1.d4, find something in which there are a fairly limited number of themes and relatively few sharp variations. And a good example of such an opening is the Old Indian Defence.
Here’s a 2600+ using it to beat a 2400+ in the Moscow Open a couple of years back, so it’s not that bad: