If it seems complicated try this.
Setting large wall tile.
However a tile may also be considered large format if at least one edge is greater than 15 such as the popular wood look porcelain planks.
So if the tiles are 10 inches high the line should be 10 25 inches off the floor.
Obviously large format tiles are heavier than smaller tiles.
Mark a horizontal line along the bottom of the wall coming up from the floor by the height of your tile plus one quarter inch.
Video tutorial from dunlop on installing large format wall tiles using dunlop adhesives grouts sealants and primers.
Then every subsequent row is a process of draping over the pyramid back and forth.
The best way is to arrange your wall tile in a pyramid shape.
For proper installation floors and other horizontal surfaces need to be level and vertical.
Install tiles one through four as directed.
Level floors plumb walls.
This video uses the following products.