Not really Guides just hamper and spoil things not to mention there overpriced
You may think guides are overpriced but in reality, most of them actually are not. If you worked in this industry at all, in one way or another, you will know a lot of time goes into these guides. From not only writing them, but getting screenshots to cover each specific part of said writing and much, much more. Time is money, and a lot of time goes into these guides. You cannot expect to always get things for free in life, or cheaper. Grow up.

That said, the guide is extremely helpful in one way or another if guides are your thing. From rather you just want information on what choices you actually want to make ahead of time to finding specific items you want to use to just nearly about everything else you can do in this game, it will be in the guide and then some.
Also, as far as when I said you cannot expect to always get things for free in life, you will need to look to online wikia's as mentioned already and I do below here. But they will not have all the information available as a strategy guide does at first and takes a few weeks, if not months, for nearly almost all details in one way or another for them to appear as people contribute to it. It comes down to if you are playing it now, and want information now versus having to wait for it later or ask around online.
Normally I would just suggest using online guides like the wiki instead. It's a little slow getting populated with information, though... but I guess that's because everyone's too busy playing (myself included, when I'm not at work

).
As the weeks go by, online wikia's and other various sites will have a lot of information. I myself have been working on doing the same for the site I work for.