Question

What is easy way to learn dimensional formulas

Answer 1

First make a figure of it and then it mark it's point on there and then below right it's formulas.

Answer 2

You don't need to learn all the dimensional formulas. Remember the formula of that derived quantity and use the basic quantities.
however, you need to remember the dimensions of the quantities which are used frequently like force [M¹L¹T^(-2)]