I've been using GRID for about 7 years now... I started using it when the original Naxx came out, and I've never considered anything else. It's compact, it's versatile, and it packs a lot of information into one tiny little box. I will admit, however, figuring out how to use it can be a barrier, though once you know how, it's very simple. So here's a quick guide to the hardest part of GRID.
Feng the Accursed - Wildfire Spark.
We're going to add the Wildfire Spark debuff to our indicators. This is a two to three step process that takes 30 seconds to a minute once you understand it.
Open the grid Menu and click the Status tab. Make sure you have the title Auras selected.
In the Add new Debuff window, start to type the name of the debuff.
I find it best to type slowly and take a few extra seconds to let GRID populate the list. It will find your buff or debuff if you let it.
Once it does, click on the debuff in the window, and GRID will add it to the list.
(optional if you like the defaults)
Scroll down the Aura's list until you find the new aura: Debuff: Wildfire Spark
Click on the debuff. This brings up the aura's settings.
Pictured above are the default settings.
Enabled: Of course, you want to have the debuff enabled, otherwise why would you be doing this?
Colour: If you're going to use a corner icon to display this debuff on grid, you may want to change the colour.
Priority: If you have more than one buff/debuff/statusindictor/whatever displayed in a given indicator, you want to make sure you understand how the priorities work. This may need to be adjusted to have more or less priority.
I'll leave the text option for advanced users, but it shouldn't be hard to figure out.
Click on the Indicators tab
Select the indicator you want this debuff to appear as. (You can see I've chosen the Centre Icon)
Click the checkmark next to the Debuff
You'll perhaps notice in my list, that I have many debuffs showing for the Centre Icon. (All the checkmarks) Closer inspection shows that these are amost all Boss dependent (Like Voodoo Doll). In fact, the only debuffs that show up in my centre icon that aren't boss specific are Magic debuffs and Disease debuffs, and i've adjusted my priority settings on the appropriate debuff appears if two happen to show up at the same time.
Now I can see that Exot (3rd row, 2nd col) has the Wildfire Spark.
I can also see:
Rali has agro,
Yuna and Deat are out of range,
Rali has renew,
This has PoM,
My Divine Insight has procced
Call, Lits Rali and Elim need healing,
Pand (not me) has weakened soul.
And my Target is Exot
This is really just a very small subset of the information Grid tells me on a regular basis.
And just for you Sat, This one tells me who's dead, though I need to adjust it so the top text says the players name... but still... it's pretty clear.
I'm going to guess, since these deaths happened after the boss died, and because I can see Actg has Divine Resonance, that he probably didn't know, or didn't care that he had it, and ran in to loot the boss along with everyone else. See what Grid can tell you :)
Carger: Because of recent developments I have decided to also move to a raiding guild. butyou all are still my friends and would love to continue playing with each one of you :) cheers.... Shawn
David (Zath): Have work tonight so won't be raiding. At this point I recommend finding another tank until I can get a proper schedule.
David (Zath): Have an 8 1/2 hour shift and 3 hours of training on Sunday so won't make it. I'll update on the calendar too.
David (Zath): Both Poke and I won't be able to make Sunday because of a Voice Acting opportunity. Sorry!
eve: Woot! We found people to raid with! Trial run: Sunday
Haru (Poke): My biggest ui change in years would be using titan panel
David (Zath): Oh my, started using ElvUI. Biggest UI change I've had in years.
eve: Gratz to Mercy on reaching level 90!!!!
eve: Wow, nice to see both new and old members getting active in the guild these days!
David (Zath): If anyone plays GW2, add me: Zatheyll.8796
eve: Ok, looks like we have some people from another guild who want to raid with us - show up friday to show how awesome E&W is!!
eve: Boo. I'll be on a bit this weekend, but still waiting for my computer rebuild...
David (Zath): Aaand their phone lines are "full" so they hung up on me.
David (Zath): Lost my smartphone so I am currently locked out of my account, not to mention my modem is dying. I'll do my best to fix it but I can't promise anything soon.
eve: Happy New Years! What did I miss?
David (Zath): Happy New Years everyone!
Carger: I cant log in :(
David (Zath): Won't be able to make it tonight, sorry for last minute warning.
David (Zath): Starting to get back into the groove of things. Expect me on a lot more. :3