Excel formulas, in simplest definition, set of instructions that you give to Excel and may contain one or multiple Excel functions with a certain data. Learning formulas is basically about learning how to give Excel instructions to get certain thing done.
As we all admit the critical significance of Excel in almost every niche of life professional or not, it is essential to learn Excel formulas as well. Without proper knowledge you cannot take better advantage of this spreadsheet software that is very capable. Once you learn the basics then only limit is how far your creative mind can go with Excel and Excel formulas and functions. It is almost limitless.