If you really think about it, can another player possibly know that much more information than another that they can charge another player an overpriced $19.99 just to read their guide? The game is too early for any player to really develop any guide that can contain that valuable of information that another can offer considering the game has yet to even be released. Why pay for information when many sites even provide that information for free. Majority of the information these paid for guides are scraped off other sites, blogs and forums and combined, compacted and reworded to become their own guide.
Some good pointers that will give you a bit more advantage over another player, pick up a profession and complete as many quests that is convenient and within your reach. Picking up a trade skill early on the game can give you a big advantage, especially a gathering profession. A gathering profession such as butchering, scavenging, magical salvaging or cultivating can grant you great bonuses during your early journey. As the game is set to be released on September 18th many players will be pushing hard to level their characters as fast as possible as well as farming as much gold as they can on the process. Warhammer gold is valued the highest during the start of the game when every player is striving to get as much of it as possible into their own hands.