This could be a really interesting game. I would suggest that the input commands you expect, have it in the same order as what you have in the quest log. It took a LOT of "What am I supposed to type?" to figure out that it was the opposite order of words than the quest log.
I agree with Chuske. Or you could, instead of explore, have the first few tasks get the player to visit each of the sites one at a time, to force the explore a bit more while having a definitive task or try out the other elements like typing in the commands.
Good work overall! I did have fun.