I have

5 alts and 1 main. Let me tell you , just go and put music and quest around. Its simple. You meet great people along the way. The two new alts I created were mainly because of RAF , so I just level till 31 and instant ding to 80 and then quest from 80 to 85.

Generally I do power leveling , I pick quests that gives me more xp and things like that and quickly switch. I don't bother leveling prof while questing as well.

There is a way , you need to RAF la

So what you do is level a new character with friend , do dungeons and quests and some group quests , you'll get tons of XP . You'll instantly ding faster not to mention with heirlooms. This will bring you and your friend roughly around 78-80. Now your friend can grant you a level for every 2 levels earned. So lets say you have another alt , get it to level 31 , then you can ask your friend to grant level to your other alt. This would birng both the characters to 80

I can provide you an addon which I use to level my paladin and my DK , without RAF. It helps me with which quests are worth it and which one should I ignore