Prot Pally noob need help
Ok guys so i have played a hunter for 4 years and i just hit 80 on my pally and i am really interested in tanking. I took some gold and spent about 5k off my main and Auction House geared myself. I have tanked Normal Nexus twice, Drak theron Heroic, Utgarde Keep, Heroic CoS. I am having a serious Mana Problem and Multi Mob control. I Think its due to the over use of Consecration. But Im not sure.. I use the 969 rotation that i read about and i have no problems on single encouters .. But in COS i had seroius issues running out of mana and holding aggro when pulling 10 mobs or so. How often do i need to use consecration to keep aggro.. I throw in Holy Wrath sometimes to help but still to no avail. I have been tanking for less than a week so please any help make it noob friendly. I understand the dynamics of tanking but i am missing something somewhere. Such as the pull.. the initial threat buildup.. I useually pull with avengers sheild and sometimes ill hit like the far left mob with exorcism the hit the far right with avengers sheild to try and ge talot of threat right off the bat.. Thanks.
Just wanted to throw in there that i use divine plea everytime it up..