I have tried it a few times. It's good if you're new to the game. Otherwise not so much. I found I leveled slower by using it, as it's suggesting to take the longest possible route usually. Basically following roads everytime, when you could take an easy shortcut. Especially if the shortcut involves a bit of fall damage, it's out of question. The "go here" spots don't also update if you take a shortcut, and then the waypoint arrow points to wrong direction. But perhaps it has been updated since then.
I now have a Patreon Page where you guys can support me while I work on Vanilla WoW leveling guides every day. I appreciate all of you who support me on there, it means a lot to me right now. Doing this full time is taxing on my financial situation. My goal is to make the best Vanilla WoW leveling guides on the web and the donations keep me going at it healthfully. There is also cool rewards you get in return for donating. Thanks!
The upcoming stress test will have some limitations. If you’re accepted for the test, you’ll see the launcher offer you a new drop down on the World of Warcraft section marked as “Beta & Stress Test: WoW Classic” which will allow you to download the client in advance of Wednesday’s test, but if you’re not already in the beta you won’t be able to log in until May 22 from 4 to 6 PM Pacific time. If you’re already in the beta, be aware that you won’t be able to log onto the beta realms either, as those will be down while the new stress test realm is up. The purpose is to get as many players as possible into those starting zones to test for stability — so there are some limitations.
Each of our leveling guides was created by a team of professional speed levelers and is designed to walk you step by step through the games questline, leveling you from 1 to 50 using the fastest route possible. Each guide is written in an easy step by step format and tells you exactly where to go, who to talk to, what quests to accept, how to complete objectives, and more. You will be amazed by the difference Zygor makes.
Only really to expand on Gráinne's comment as regards the 'collecting' and 'roster development' sections - which are, as said 'distinct' although they are intrinsically linked - I would like to point you in the direction of the in-game Achievements > Battle Pets > Collect tab. There are a series of achievements called Raiding With Leashes, pretty much all of which can be completed via the auction house - if you have the gold/inclination - or by completing old raids.
With the Classic beta now out it seems every related article somehow manages to spark the eternal war of "Vanilla was the best WoW sucks now" and "lol nostalgia goggles, Vanilla sucked, enjoy your two weeks of Classic". I have to say, even though I understand the principles behind the battle and the reasons people behave and talk this way... I actually REALLY don't get it on a deeper level.