You realise of course that the word metaskill doesn't exist in the dictionary so I and probably others haven't figure exactly what you are asking.
Now my interpretation of what you are asking is how do you use the LCS courses to build an 'arsenal' of skills. To that I can only answer do the courses. Each course develops a skill from a deeper level other than rote memorisation that is largely required for passing exams in many tradional methods of schooling.
Each of the course causes you to look at using more of the multiple intelligences identified by Howard Gardener. That is they require a bit more of you than your linguistic and logical intelligences, they also encourage you to tap the spatial, kinesthetic, musical etc intelligences (they are listed on page 129 of the PR book 3rd edition).
So the best way to develop these skills, start by doing the courses, they have activites that are intended to develop these skills. Most of all apply NOPS to the experience.
Alex