":" - Any time a step ends in a ":" instead of a "." means that the next step is part of the current step you are on. This generally means the next step should be done while working on the current step. This means every "start working on" or "continue working on" will end in a ":". But this is used with other occasions as well, so keep this in mind.
It surprises me how this farm was not made public until Legion. It literally slipped through our sights all throughout WOD, where admittedly it would of been a GREAT replacement for the infinite embersilk spot that was quickly nerfed. Anyway, this volatile fire spot takes place in twilight highlands in the humboldt conflagration area – which is a small fire bed with about 20-30 elementals roaming around. Each time you kill you have a chance to recieve volatile fire which is worth 50 – 100g per drop. However, according to my test, the volatile fire has a higher drop chance than the volatile water. I believe this has to do with the popularity of the volatile water farm in WOD, it's popularity may have of gotten it stealth nerfed. Sad to say, but this spot is slightly better in my opinion. REMEMBER to use a potion of treasure finding.
Some quests in my guide are marked as "SKIP" and colored in red. These quests are simply either too hard to solo or not worth the XP/time and are skipped. My guide will only list SKIPPED quests if the quest is a direct follow up after completing a quest, not one that you have to click the NPC again to get it. If you hover over the skipped quests, it will give info on why it is skipped in the guide (unless that info is already listed directly in the guide text).