Went through the few threads of this and have the following.  This is subject to change when they lower the levels of the mobs we need to fight to learn the skills (aka not fighting lvl 25s to learn a lvl 16 skill etc)  Feel free to chime in and add/update the list

Read in the wind 1 - lvl 26
Spiders outside Trengal keep
Infineum Simularum , southern infineum mine fields

Read in the wind 2 - lvl 36
Roaches in Darguns tomb
humanoid´s in the cave of Karrus Hakrel
River palace

Read in the wind 3 - lvl 46
Handlers in Raz (easiest option imho, they use the skill at roughly 50% hp)
Flame AND Flare maidens in raz

I got my skill updates from Flare Maidens couple days ago. Not sure if it was pure luck but at least it seemed to me that it was a lot easier to get 'em from the Flare ones than Flame Maidens. I only got one update from about 10 Flames and it seemed to me that they were always casting something else during the 50% spot where they usually tend to "teach" skills. Took agro on two Flares after that and got the updates.

With the update in levels you can learn RITW I figured I could learn RITW2 at 34 in Dargun's tomb... However, after much duoing with a friendly Disciple, I still have no learned it. I've looked for the bats but we had to turn back before we could get that far.

When you say "roaches" I assume you mean "Infesting XXX's"?

Having trouble with rank 3, I've been tanking the Flare Maidens at the summoning circle just inside the east door to RI.. I've had probably 15 "learns" but still no skill.  A ranger friend reports that one of his learned abilites has been bugged until recently, where he would learn and learn but no skill.  Anyone know anything?

I'm beginning to think that learning Reed in the Winds 3 in RI is bugged.

We killed at least 2 dozen of Flame and Flare Maiden in RI, and quite a few Handlers, but no update. Nothin, nill, nada, niente, nichts. While a Ranger with me learned his ability from the first five Tamers, I didn't even get a message that I have started to learn Reed in the Wind 3.

I don't need to be in a certain stance, don't I? Because for the first two levels I got updates in Harmonious Body Stance.

That's what we did, I tanked him, the rest of the group stopped at around 60% I cooked him down to 40%, and the Flame- and Flare Maidens casted the Bloodmage spell Ritual of Shielding, and the Handlers something I don't remember. Nothing learned. Not even started to learn...