What is the best way to learn guitar modes effectively and efficiently?

The best way to learn guitar modes effectively and efficiently is to start by understanding the theory behind modes, including how they are constructed and their unique sounds. Practice playing each mode in different positions on the fretboard to develop muscle memory and familiarity with their intervals. Utilize backing tracks or jam with other musicians to apply modes in a musical context and improve improvisational skills. Consistent practice and experimentation with modes will help internalize their sounds and enhance your overall musicality on the guitar.