Let me start off by saying I hope this post makes sense, as it's getting into territory I'm rather inexperienced with. Anyway, I seem to recall hearing Ajahn Sumedho say that you can't see awareness (at least I think he said that), so what I'm wondering is if the mind takes awareness to be self then how does one go about uprooting that ignorance, and if you can't see the awareness then how can you reflect upon it in terms of the three characteristics of existence? And also is awareness considered the same as consciousness? Anyway, I look forward to your replies and thanks for your time!
You can experience awareness, you can be aware that you are aware, you can be aware of how that awareness changes and fluctuates, and you can be aware that awareness is not self, there are meditation techniques that take awareness as the main object.
I think you've probably misunderstood what Ajahn Sumedho said as from what I've read/heard he encourages this kind of meditation, so if you can find the quote and post it we can take a look at it.
I can't say I can explain the correct definition of conciousness, I don't find the word used much by Theravadin teachers, I think it's more commonly used by Mahayana teachers but quite differently from the Pali definition.
Here are a couple of definitions I found on Wikipedia, some teachers prefer to use Awareness as a translation of sati instead of mindfulness as the word mindfulness brings up a lot of pre-conceived ideas in the meditators mind.
Conciousness: Viññāṇa refers to awareness through a specific internal sense base, that is, through the eye, ear, nose, tongue, body or mind. Thus, there are six sense-specific types of Viññāṇa. It is also the basis for personal continuity within and across lives.
Awareness: Sampajañña (Pāli; Skt.: samprajaña) means "clear comprehension," "clear knowing," "constant thorough understanding of impermanence," "fully alert" or "full awareness," as well as "attention, consideration, discrimination, comprehension, circumspection."