What are some good MCIs to do as a Lance Corporal?

Don't know if they still have it or if it has rank restrictions, but Warfighting is good and if you get really ambitious Amphib Warfare. Both come with a stack of several books (sub courses). You'll learn a lot and if you stick around you'll be way ahead of the power curve, because they "were" required for Company Grade O's and it will show great initiative on your part.

I note that you are an airedale.

1)_Take three MCI's in your MOS/aviation field

2)_Then take one basic education MCI if you have a weakness, No matter how good you are at English and writing, assume that you have a weakness.

3)_Then take one ground combat MOS MCI,

4)_Then take one combat service support MOS MCI,

5)_Then take one MCI for the next billet you want. If it isn't apparent, ask the current billet holder what he/she recommends. I wanted the 81mm Mortars platoon. But never took any mortar related MCI's. The Battalion CO gave 81's to the 1stLt that had completed every mortar related MCI. You don't have to tell me twice, I started taking every Surveillance and Target Acquisition Platoon related MCI and Intel related MCI. It worked.

6)_Start over again with step 1)

Have you checked your MOS roadmap? Available through TECOM, it will provide a list of DL or Distance Learning courses for your MOS.