[Dyerryjex]

Amber, I'll probably repeat some of what you just read, but I just can't resist.
Am I supposed to see with my "third eye"? How can I see? How can I do it successfully without waking up? It has been theorized, and I agree with this idea, that you perceive with your energy body. In other words, your energy body is your vehicle and your perceptual organ. Sort of like radar, and explains why you see 'everything', nondirectionally (aka 360 vision)
What does it feel like when you go through walls? Pretty much how you described, and other ways too. I've felt like mist going through the wall, like butter, and sometimes as if the wall/barrier were made of rubber. Most of the time the wall feels the same as in regular old reality, and I'm the one is who feels different. Except I feel how it feels on the inside. It just depends on how engaged in the experience you are and how fast you're going.
If I don't hear a popping sound or any other weird noises, does that mean I haven't successfully disconnected myself from my body? It doesn't mean anything. Astral noise is a symptom of the transitional state- so if you transition fairly quickly, you may not experience any exit sensations, like vibrations or noise.
Is it possible to meet other people who are out of their body and you're able to interact with them? Yes. I've interacted with living projectors, guides and other type beings.
Anything jump out at you in this post that you could help me out with? When you went through the colored barrier and ended up in a dream, you probably shifted into the astral. It is not uncommon to shift phase from the RTZ to the astral, and getting speed or going through barriers or vortexes are some of the ways you can do it.