Stormheim is the zone you want to start it. For some reason Legion treasures are not worth any experience like they are in WoD...except in Stormheim. I haven't been able to find out any reason for this, and it's possible it may get fixed/nerfed at a later date. But for the time being you REALLY want to jump from treasure to treasure to augment your quest experience.
My second least-favorite part: leveling ranges. Zones are divided into leveling ranges; some are for levels 10-60, others for levels 58-80, and so on. On the surface, that appears to make sense; while there are odd moments where you're presented with the content from two expansions at once, it does mean that you're more or less going through content in order, at least by expansion if not by level.
According to Game Director Ion Hazzikostas “We are seeing the same sort of discrepancies that folks in this thread and others have pointed out,” said Hazzikostas. “But we still have yet to pinpoint the exact aspect of scaling that we failed to account for. We want to understand why the numbers are off and fix the underlying cause: Were stats on gear reduced too much? Some aspect of creature armor or other combat calculations? Are our baseline values accurate, but the shape of the scaling curve wrong such that it’s particularly far off the mark in the 60-80 range?
Take breaks. Unless you're straight up no-lifing it over a weekend or something, this leveling process is going to take ~40 hours. But any time you do need to step away, log out. That tiny little bit of rested exp is insignificant...but you never know when something might come up and you'll have to leave for a longer period of time than you expected. Better to be logged out and safe(especially with War Mode on) than AFK waiting for a d/c. Plus, you'll need to stretch, eat, shower, and maybe sleep. XD
A Aegwynn Alliance Aegwynn Horde Aerie Peak Alliance Aerie Peak Horde Agamaggan Alliance Agamaggan Horde Aggramar Alliance Aggramar Horde Ahn'Qiraj Alliance Ahn'Qiraj Horde Al'Akir Alliance Al'Akir Horde Alexstrasza Alliance Alexstrasza Horde Alleria Alliance Alleria Horde Alonsus Alliance Alonsus Horde Aman'Thul Alliance Aman'Thul Horde Ambossar Alliance Ambossar Horde Anachronos Alliance Anachronos Horde Anetheron Alliance Anetheron Horde Antonidas Alliance Antonidas Horde Anub'arak Alliance Anub'arak Horde Arak-arahm Alliance Arak-arahm Horde Arathi Alliance Arathi Horde Arathor Alliance Arathor Horde Archimonde Alliance Archimonde Horde Area 52 Alliance Area 52 Horde Argent Dawn Alliance Argent Dawn Horde Arthas Alliance Arthas Horde Arygos Alliance Arygos Horde Aszune Alliance Aszune Horde Auchindoun Alliance Auchindoun Horde Azjol-Nerub Alliance Azjol-Nerub Horde Azshara Alliance Azshara Horde Azuremyst Alliance Azuremyst Horde
Edit 20 It’s been a week since this post and a lot of people are still reaching out to me with questions which is fine. I have had a few different people reach out to me to help make YouTube videos based off this guide and more info in BFA which I’m more than willing to do. Whoever gets the videos up first I will link them here for you guys to enjoy.