Tips to Completing the World Explorer Achievement

   Do you know how to complete the World Explorer achievement? There're a dozen tips for making your explorations less tedious and more fun.
The first tip is if you can gather stuff, try to choose nodes as you go. We suffer from a bit of OCD so we had to stop for most nodes but in the low-level areas we only picked those that were directly in our path because we're simply swamped in Copper Nodes, Peacebloom and the like. On the other hand if you are in a hurry to complete this achievement, don't bother stopping.
The second tip is to try to pop into dungeons if you're in the area. We managed to complete Razorfen Kraul, Razorfen Downs and Wailing Caverns. Exterminating the denizens of such a low level dungeon can provide a welcome change of pace. And you will also make a bit of gold on the side.
The third tip is to plan your portals. It is ideal to set your hearthstone to Dalaran. From there you can jump to any of the major cities and if you already have a bunch of flight paths, getting to the specific zones you need is easy. Also try planning an ideal path through the zones you wish to explore and aim for efficiency as well. Running around aimlessly won't make for a more pleasant experience.
The fourth tip is to use autorun as much as possible.
The fifth tip is to pick up missing flight paths. Even though our main is our most experienced character and we've had him since Classic Wow, we still missed some flight hubs. So picking those up along the way was a no-brainer.
The sixth tip is to use helpful addons. We just came across Tomtom and man; you see, people have already explored these zones were so nice as to load the coordinates of the various sub-zones in the comments under each zone's achievements. So you just plug those coordinates into Tomtom and it is smooth sailing from there. You won't have to hunt that elusive sub-zone for hours on end.
The seventh tip is to empty your bags before you start because you never know what you pick up along the way. Since we're a miner/herbalist we managed to gather a lot of herbs and ore while exploring. When we popped into lower level dungeons, the bags also popped at the seams with dropped stuff. Unfortunately we had to destroy a lot of it but we still ended up with roughly 100-150G from these dungeons.
   The eighth tip is not to attempt to explore all zones in a single sitting.
   The ninth tip is to pick up easy quests along the way. Some of them may be fun but this is another way to work towards The Loremaster meta-achievement. This is how we lastly fulfilled Hemet Nesingwary: the Collected Quests. Oddly enough, even we had finished all the Nesingwary quests in Outland and Northrend, the final quest named Big Game Hunter in the original series was incomplete.
   The tenth tip is to keep a lookout for rare elites. Even low level ones drop nice stuff that you can put on the AH for a quick profit.
   The eleventh tip is not to become flagged. Getting flagged can equate to getting murdered by the opposite faction. Also, if you need to get in close proximity to one of the major cities of the opposite faction, try to leave it for last because there are high chances that you will get flagged.