The long video above (18 minutes!) shows many examples of formula transposition.
The above video from Queen Mary's College shows several examples of rearranging physics formulas.
It's important to stick to the rules of algebra when transposing equations.
To keep a formula in balance, always perform the same operation to both sides of the equation.
Study and practice
Use these search terms to find your own resources:
solving for a variable
isolating a variable
changing the subject of a formula