A while back, the question was asked (and answered): Correct use of consist in / consist of.
I have a similar question:
Which of the following is correct:
"The objective of these lessons is to provide a solid foundation in the correct usage of prepositions."
vs.
"The objective of these lessons is to provide a solid foundation of the correct usage of prepositions."
EDIT: Here is the full context where I'm looking to select the right preposition:
"It is important that students understand the fundamental principles of manufacturing. The objective of the lessons is to provide a solid foundation [in/of] the science and techniques necessary for that understanding."