By leveling to 70.
Yup.
By completing quests and killing monsters, you get exp which goes towards your level. Vanilla WoW is lvl 60 max | Burning crusade is lvl 70 max and wotlk is lvl 80 max
You downgrade other emblems or any lvl 70-80 non-heroics after ur 1st of the day.
getting dungeon runs from higher lvls takes about 20 days without doing anything
no
good way to do so is just doing quests that are green or yellow in the quest log, also if you get a highlevel to help you it can go faster.
Play the game and level up, in order to reach level 80 though you will need to also purchase the latest add-on packs
No account trading or selling is against the rules.
no...?
The current maximum level in World of Warcraft is 85 (with the release of World of warcraft Cataclysm, which you must have upgraded your account to). If you have not upgraded your account, then here are the max levels that you can reach: Wrath of the Lich King account - 80 Burning Crusade - 70 Vanilla (original wow) - 60
Trading, selling or giving away a World of Warcraft account is against the terms of service from Blizzard and is a bannable offense. Also, answers.com is not a personals site.
Assuming your probably wanting to level to 80 now. Questing is the fastest way to level, if you aren't a fan of questing then you can level through AV after 60 which is about an hour longer.