Guilds are perhaps one the most effective ways of progressing your character, and in turn, making money. Most 'high-end' guilds have a guild bank where members donate items for other members. This may range from potions, reagents, and craftable plans. Usually you will have to donate to a guild bank in order to receive items as well as stay active in your guild, but receiving potions that will aid your progression and craftable plans allowing you to profit off selling the products will benefit you in the long run. Also, donating to your guild bank may mean donating something you cannot use in turn receiving something you can use. Sometimes, additional services such as VoIP servers are provided and play a key role especially in end-game content; communication is paramount to a the success of an efficient group. Efficiency results in receiving gear faster, running more frequently in a shorter amount of time, and in turn making more money from runs. In a well put together guild, members become a close knit community including financial and questing support, which are among the most profitable benefits. If you have not considered joining a guild as part of your strategy moving through the game, you may wish to strongly reconsider.
As an example, I will take my server values to calculate how many procs you need to make up the price of one Magnetic Mining Pick (40 SS ore, 10 Platinum ore, 15 Expulsoms). Assuming 25g per SS ore, 20g Platinum Ore, and 55x the price of Tidespray linen to craft 1 expulsom in average (got the value from a previous post in this subreddit); 1 Pick is worth 5325g (not counting the elemental flux).
To do this, you will need up the WoW Legion Expansion, a maximum of 10 characters including a Herbalist at Lvl 100+, and, of course, Seeds! You can get the seeds by farming them, doing Herbalism World Quests, or buying or trading them in the Auction House. Usual seed raids can are for 30, 50, and 100 seeds and raiding them can take up to a maximum of two hours.
Most classes in World of Warcraft start at first level, but Death Knights and Demon Hunters are exceptions. They start at level 55 and 98, respectively. This alone can shave a huge chunk of time from your leveling experience. Of course, it only works if you want to play a Death Knight or Demon Hunter, but they’re both solid classics that can dish out damage or tank in a group.
Anyway, however you choose to get to the addon's menu, choose guide list and then pick the zone you want to quest in. There are some zones that will autoselect based on quests in your log, but not all guides or all quests are set up that way. (If you don't want to switch to a guide that auto-pops up choose "not now" or "never") As you can see in the screenshot, there are various categories of guides. Most max level content (such as Argus) is found in Achievements rather than leveling.