Adorable, I indeed did not fully understand your post. I simply do not see a connection between innocence and learning things from the “right” sources. Perhaps you can explain it a little more clearly? Thanks.
About the first definition I gave, I think it means that even if you once were familiar with and pursued “evil” or sin, it is still possible to reach a level of innocence through ridding yourself of your familiarity and connection with them. If you no longer feel a connection to the sin, you have gained innocence.