This forum.
You’re already here! Check the stickied guides at the top of this forum. Several are already updated to Season 19!
You’ll likely want to read through this:
For Fire EQ, you’ll equip Blade of Tribes and Cube Furnace. You don’t want to equip Furnace since the Blade of Tribes has an EQ damage bonus that can’t be accessed via the Cube.
At present, Fire (or Physical) EQ is our weakest viable solo build. But all that means is that it can’t clear as high as our other builds. For new or returning players, it’s the best build because it’s easy to gear, easy to play, and deals tons of damage right out of the box.
Every legendary that has a legendary affix can be Cubed. With a few exceptions, Set items cannot be Cubed.
Let us know if you have more questions.