How do these tomes work in acquiring?

[dehlert]

I feel dumb in understanding this.. I know doing roulette I get tomes once... but is that really it? I can not grind it out in anyway? Or maybe the harder dungeons give rewards each time you complete? I am pretty fresh on the 8 man bandwagon so I am not 100% how these tomes work.. but I would think once a day from roulettes a slap to the face since you need 400 plus tomes for general gear.

[Seryl199]

You can start legitimately farming tomes starting with level 50 dungeons. Halatali hard mode, brayflox hard mode, and lost city of amdapor are currently the most lucrative sources of tomes, offering 50 mythology for level 90 items and 45 soldiery for level 100 items, but any level 50 dungeon and a few of the later leveling dungeons will drop tomes upon killing bosses. Roulettes will simply give you a nice bonus on top of what you already get for completion, albeit once a day. There are alternative methods to acquiring tomes, beastman dailies comes to mind, though I can't recall any others off the top.

[Rufalus]

The latest update now tell you how many tomes each dungeon is worth when you select them on the duty finder. Roulette tomes are only awarded once a day, but dungeon tomes come every time you complete them.

[dehlert]

how far in the story do I need to be to unlock the hard mode?

[Puwarh]

how far in the story do I need to be to unlock the hard mode?

you have to complete the story first then quests for those HM dungeon will pop up.

[Lollie]

Tombs are also acquired from DoL maps. They are gathered off lvl40+ nodes or purchased off the market board (usually at an outrageous price)