how often do you have to login?

[Thurmnmurmn]

If you want the fastest way to get your tomes. Hunt trains are the way to go. Do a train 3 times in a week and you're done. And a train takes like 25 minutes if you count the boarding times.
Otherwise expert roulette like someone else mentioned.

[TheMightyMollusk]

If you're not a miqote player, you're missing a lot of things.

Of course, if you are, you're also missing things. Like your ears when you wear most hats.

Yes, I'm aware of the irony of a Viera player making a crack about hats.