I wonder about the criteria, are they interested really in learning or in learning as indicated by success at taking tests.
Personally learning for me has been about reading and discussion, discussion is a big one, and I take a pride and ownership of my learning too, its an affect thing, but also I find that good learning can come from interaction.
I'm interested in the topic of learning per se though, learning theories and the like because I'm motivated to learn.
The highlighting and underlining I do think is a bad strategy, most of the people who I've known to do that dont memorise what is highlighted or underlined because they think that highlighting it or underlining it saves them the need to do so. Its a lazy strategy. Sort of like going and buying all the latest books and having a stack of books and some how expecting it to jump of the page and into your head. Consumerism not concentration.
Beginners mind is important, believing that you have something to learn in the first place and dont know it all, then being motivated to learn.
Having good material to learn from, concentrating and removing things which will adversely effect concentration and attention, ie background noise, intrusions, distractions, and not being tired, not being hungry, craving coffee or something like that.