Part of the time, is memming time, which is I think is based on meditation skill, then there's a refresh timer. The mem timer is shown on the bottom left of the spell book in purple when it's open, and will get faster as you level up and increase your meditation skill. The refresh part, is constant and is based on the spell. At low levels, it takes a while to mem a complete set, because of the long mem time + fixed refresh times. Priests and Int-Casters used to get higher meditation per level, but looking at a level 2 Pal with max of 10 meditation, maybe not anymore. Well maybe they do, Pal had 5/10 at level 2, Shaman had 10/10 of level 1 (looks like they bumped it alot for hybrids, which used to not get Meditate until around level 9, then 5 per level above 8).
More on Endurance bar history. Originally it was a "fatigue" bar called Stamina (I know same name as a stat?). And there were spells that help with it's loss, that say something like decrease stamina loss. These spells are finally out of the game, and haven't worked since the change in 2002/3 (PoP Era). Prior, getting low on stamina you make you melee hits much lower on average and some activities slower, like swimming at run speed would slow down to basically walk speed swimming (which is your swimming skill was really low, that was really really slow). Swimming at run speed, jumping, fighting, and other activities would burn alot of it up too.
As far as AA guide, my beginner guide is at
https://forums.station.sony.com/eq/index.php?posts/5623/ for all classes. If you're Bronze level member and not at least Silver, you may narrow it down even more, and then definitely avoid utility ones, and stick to the core for your class(es). If at least Silver, it's fine to get all mentioned, although personally I still question some utility and tradeskill and some like Innate Regen, Innate Run Speed for those with SoW or SoW speed clickies since they can be cast any where now (some people still think there are limitations on run speed due to SoE/FoE having levi in which some zones are levi free), and some others like, I don't usually get Innate Metabolism right away, but I have a forager on every server that can go to Plane of Time and get Miraculous Drinks and Meals for free. Anyway, some like those I just mentioned are questionable and depend on the person. Others like the Innate stat and resist ones no one should get until max level and clearly needing them or nothing else to buy, as equipment from 50s to 90s will generally keep you maxed on stats and close if not maxed on resists (just depends if you been keeping an eye on them when upgrading and getting the best pieces for what you're getting behind / weak in, as you can get way too much of one stat / resist, then come up short on another; but that's more of equipment management thing).
EDIT: Yea, grey is timer until you go out of combat. On self-window (Alt+Y) icon changes depending on whether, just standing, sitting/medding while out of combat, waiting on out of combat timers, or in combat.
EDIT 2: Fizzles are primarily, what gbaji said and due to the difference between the level of the spell and your skill in that spell type. Like meditation, Priests and Casters get a bonus compared to hybrids in those skills, and eventually get specialize skills, which help out even more. And some classes get clickies or spells (Enc) that allow them to cast as if a higher level, so less likely to fizzle. Interruptions are pretty common for low level hybrid, since they stay in melee and don't have much Channeling skill.
EDIT 3: If you plan on staying at a lower see Trio Jewelry Configurator at http://nathrach.republicofnewhome.org/gizmotron/ it'll get you maxed on most stats by the 40s with appropriate settings. And is the best twinkable gear by the mid teens even with the Gold setting let alone other levels. See this 0 AA'd 59 Clr missing augs and some gear, still maxed and tons of HPs and Mana at http://eq.magelo.com/profile/2390040 showing the effects of a full set of trio jewelry and the appropriate setting with Underfoot diamonds.
Yther Ore.
Edited, Oct 7th 2013 4:00pm by Yther Edited, Oct 7th 2013 4:16pm by Yther Edited, Oct 7th 2013 4:33pm by Yther