Using a high level to level a low level toon is boosting, yes.

I think the general consensus is that boosting is the fastest way to level, but if you're just starting out and learning the ropes, you'll probably want to quest 2 of the same level for at least a little while to work the kinks out of your initial setup. The more new accounts you are leveling at once, the more appealing boosting is as it means longer questing times once you get into the ground-spawn collections where everyone needs to collect their own items. Though I thought I read something about that changing with the upcomming patch.

The high-level that you are using to boost with is also something to consider. I don't know how good priests are for boosting, but any toon that can at least semi-tank and AOE lots of mobs is always preffered for faster killing and less downtime.

If your accounts are under the same BattleNet then you can mail the BOAs to the new account.

Only other suggestions offhand are to read the newbie's guides and download and set up Jamba. Jamba is probably one of the most critical addons you can use for multiboxing.


http://www.dual-boxing.com/threads/3...to-Multiboxing

http://www.dual-boxing.com/threads/4...tiboxing-Vol-2

http://www.dual-boxing.com/threads/4...release-thread

http://www.dual-boxing.com/threads/2...etting-Started

You probably won't get much use out of the macros in the MoP Macro Library, but reading up on the macro setup sections will be useful.

http://www.dual-boxing.com/threads/4...-Macro-Library