no u cant.
Yes, but you'll get diabetes. Seriously though, no. you stay the same.
different types of glass armor will not show up or be able to purchase until you reach a certain level. im not fully aware of wich level. but im sure red armor is high level armor
Valkyrie's armor forged to level 10
The next level would be rune armor.
It is either leather/steel or quest\enchanted armor or blades armor
You cannot get the Lich King's armor. However, if you wish to get armor that looks similar, there is level 80 plate in Naxxramas that resembles Death Knight armor. Similarly, the pieces of Deathbone plate armor that drop in Scholomance (level 58-60) also have a similar style.
As you level up you will find that rare armor starts to appear in the game on bandits and other humanoids The higher your level, the more you will start to find and the more it appears. First is dwarven, next is elven, and so on. I will advise you to aim for better armor though, such as dadric armor or glass armor.
high level rathian armor with a redwing
level 36 mission "shadows of aku" mission giver: samurai jack
kabeer
If you are a member on runescape them you should get Guilded Armor or Gunthix armor. If you are not a member i suggest that you get Rune Armor. (Gold plated armor dose not change the strength of the armor at all) Hope This helps =)
If you mean DAEDRIC armor, you need to be high level, at least level 24, and it will start appearing on Dremora and Marauders.