General Analysis of World of Logs
Deaths
What is killing your raid team will tell you who is consistently dying to preventable damage and who is dying because the raid is falling apart (enrage timer, healers/tanks dead, etc.)
Overall Fight DPS
There is an ebb and flow of dps for every encounter. You can use WoL to see when you're dps is pushing the hardest during the encounter.
Tanks
In general, when viewing tanks for information, you want to see damage done, avoidance and dps(threat).
DPS
Numbers should be in line with other dps. If you think your entire team is behind for an encounter, you can always review other raid's data on WoL. Pinpoint those who seem low. Analyze their rotation vs. their actual output.
Healers
Is their HPS high enough? For classes with preventative damage (disc priests/paladins) you can view an estimate of healing equivalency that their bubbles provided -- if this is not in line with expected HPS, then this needs to be examined in more detail. Who did they heal? Analyze their spell use vs. their raid assignment.
Note
To get the most out of WoL for every individual, it helps to know their spec/glyphs/assignment. With this information you can delve a bit deeper and analyze rotations and spell usage which is the crux of improving for most players.
Finding the Data
To find reports concerning the entire raid, use the Dashboard drop-down menu. You can pull up reports for dps, healing, damage done, damage taken, and deaths.
To find reports on individual players, go to the third menu, Players, and select a player's name. This will bring up an individual meter of the player's performance.
- Damage by Spell lists all damaging abilities utilized by the player as well as all damage the player took from all sources (avoidance information can be found here).
- Healing by Spell lists all healing spells the player cast as well as all healing the player received from any source.
- Damage by Actor lists who the target damaged during the fight as well as source of damage to himself.
- Healing by actor lists who the player healed as well as who healed that player.
- Buffs gained, Buffs cast, and Death are all fairly explanatory but can be found in this area as well.