Need Pally Tanking Advice
Surprised nobody has mentioned this but I think the best tanking addon is Tidy Plates. Once you have that, get the plugin fir it called Threat Plates. It is configured by default but you can customize it to your liking for scale, color, etc. What it does is change the size and color (even dtransparency) of mob name plates based on your threat level. Amazing for finding the add you are about to lose threat on before you actually do. Works great for dps also to help know when to back off a little.
My personal trick is to also use my healing addon (VuhDo for me) for tanking also. I have it configured to show marks for threat so I know who pulled off me as well as click cast things like righteous defense or intervene.
Outside of that, learning the pulls and your rotation are the best medicine. When you can tank without thinking about which button to press, it allows you to focus much better on what is happening around you.
"he doens't need healing, he doesn't need healing, he doesn't nee-WHAOSHIT!wtf was that man!". Please stop leaning on TDR. -Teng