best method to study these openings ?

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Mikoto0

hello guys , i just want to ask about the best method to study these openings ( and if i shall study them from books , please recommend me the best books for them )

the openings are : 
-Ray Lopez ( as white )

-philidor defence  ( as white )

- sicilian defense ( as black )

- chigorin defense ( as black ) 

 

please notice : i am a medical student and i am also studying for the USMLE , so i really dont have that much time for chess , it is just a hobby . so , the more efficient and the less time consuming the studying method , the better 

thanks in advance 

xartesit03

The Phildor is pretty solid if your opponent knows what he is doing but there is a 7 move checkmate that people new to the phildor may fall for here is how i play it:

Taking advantage of his blocked bishop by getting my bishop into the middle and then matching the pawn base

xartesit03

h2 also blocks the annoying Bg4