You're right - it isn't the raid leader's RESPONSIBILITY.

However, I've found that if you're pugging and you take 1 minute to explain the fight to everyone, it prevents a lot of problems. This may be because the person has been raiding Ulduar and they're helping you out in Naxx or it may be because they haven't done the fight before as a healer so they don't know what to expect. Reading about something is not the same as doing it.

I agree with pam.

I've tried reading up on some fights and usually the info is what their abilities do but it's not as effective as just trying the fight.

Especially the videos. the horrible videos on most raiding sites. Every single one i've seen has just been a video of someone doing the fight but their UI is all muddled with crap because they of course have recount and whatever relevant addons they use. If there was some kind of voiceover explaining what was happening then maybe just maybe the video would make some sense.

I recommend the tankspot videos. They are very detailed in explaining the fight and the UI isn't so "muddled" up.

@ Sarakin

The videos from Tankspot have a voiceover explaining the fight and every special thing raid members have to watch out for in every spot, they're a good watch.