Because of this you need to constantly keep an eye on your healer. If a mob isnt hitting you, then he is probally going to hit the minstrel.

So when tanking, you need to be aware of:
The pull
aka who starts the combat off
your own hate levels
aka how much you are ****ing off the mob.
your fellowships hate levels
aka how much DPS they are doing.
your healers hate levels
aka how much healing they are doing.

Concept 2) KEEP THE HEALER ALIVE

As far as I am concerned the number 1 priority for a tank is to keep the healer alive. Without healing your fellowship will die very quickly. It is my opinion that if a DPS class pulls hate onto themselves its basically there own fault - for over DPSing. However when a healer pulls hate onto him its probally because you have not tanked well or the healer needed to heal alot (aka doing his/her job).

For this reason you should try to save your taunt moves for the occasion IF your healer gets LOTRO Gold hate. If a DPS class gains hate by all means get the hate back but use normal + hate moves rather than taunts. Always priorise saving the healers before anyone else.

Concept 3) Group organization

It is usually the case that Guardians have to organize the group.
This is because you are at the front and it is much harder to lead from the back - say if a minstrel lead. With a Guardian at the front leading if you accidentally pull the mobs will start hitting you.

Also as a Guardian you need to organize Off tanks (OT) and Crowd Control (CC). OT is a player who takes a mob away to one side. This can be done for various reasons, such as the mob has a cleave attack and making him fight away from the main group means less damage done by the cleave. Or to share damage done by mobs over a few tanks.

For CC you need to organize as being the tank you need to know which mobs you can safely hit. You can set up targets to CC via the assist function. Select a target you want to be CC ( eg a Undead mob) then ask whoever u want to do the CC (a minstrel) to click the assist button next to your name in the fellowship bar.

Concept 4) Main Assist/Focus Fire

It is almost always the case that you want to Focus fire (all damage directed at one mob.) For this reason it is wise to assign a Main Assist (MA). The MA job is to decide what mob to kill and in what order. The reason why this is important for a tank is that you must know who the DPS is going to be on, so you can get LOTRO Gold lots of hate on this mob. Always know what mob is being targeted so you can focus most of your attacks/hate moves on this mob too.