My son is in the military. He’ll be finishing his tour sometime next year and for the moment not planning to reenlist. (he'll be another 4 in the reserve)

He’s been working with computers, all the way from networking, fixing to his job as an Intelligence Analyst. (Doing whatever they do)
Although he managed to get college credits, still needs to work on his degree.
Because of his lack of formal education at the moment, he is planning to get an A+ certification to get a job as soon as he gets back home.

I would appreciate any advice/suggestion or guidance on this, especially those of you with info on A+.

If you have experience on this subject, what books should I get?
What areas the book should cover? (I sent him a book I bought but he said it was too easy and finished it right away)

Do you consider his plan a good idea?

Should he aim a little higher considering his background?

Are there any former military people here w/similar experience?