From 58 to 68 – as a new stage in the development of the character
As soon as you get the coveted level 58, and you are not in the dungeon at this moment, then you should drop everything and immediately run to the Beyond. To do this, you need to find a portal, which for the Alliance is located in Stormwind, for the Horde you will find it in the Cleft of Shadows. From the quests, the experience you get will be much more, and you will finally start to knock out a normal level and higher-quality stuff for yourself. It is advisable to combine the execution of quests with trips to the inst "Bastion of Hellfire". For the passage you will get a good experience, and the stuff there for you will fall out already purple. It is ideal to take a friend of the maximum level with you and from time to time run through this insta in a few minutes.
Completion of the selected level of Torghast, Tower of the Damned https://epiccarry.com/us/boost/torghast-tower-of-the-damned/
As soon as you reach level 60, immediately learn flying and buy a mount that you will fly to the Beyond. In order to save money, you should not buy flights on Azeroth. The mount will allow you to complete quests much faster. You will be more accurate to get to the desired goal, as a result, the Persian will swing much faster.
In Nagrand, there are tasks from the Nagrand Arena. For their implementation, you will get a huge amount of experience in a very short time. All tasks are done in one place, it is only necessary to take them and immediately kill the necessary mobs.
From those tasks that you received on the boards, you will not get anything, since this series of quests ends. It is best to navigate by hints and maps.