Lord of the Rings Online Classes Guide Pt.2

Lore-master are exactly, averagely popular with the developers. Elves make the best hedge wizards but Humans can manage it too. Their skills are all focused on CC. Because they're rather squishy, they have a couple of pets they can call upon to distract their enemies like bears or ravens. They can mesmerize two enemies at a time, root others to the spot and do reasonable damage themselves up close.
Lore-masters make great solo avatars due to their variety of debuffs and their pet. But their healing and power-replenishment skills are very weak, with slow timers and actually are transfers of power or morale from the Lore-master, leaving him dangerously weak. Moreover, their skill-set is focused towards slowly killing enemies one by one, so they clash a little with over-aggressive champions and their disruptive area attacks.
Guardians are the main tanks in the game, as the third most popular class. They can absorb damage and draw enemies on them. They can only cause damage when they're being attacked up close over a long period of time, so ranged and self-healing enemies are their nemeses.
With this, solo play with a Guardian is much slower, so it's worth staying teamed up all the time- something that's true throughout the game for all classes, especially if you're seeking to achieve the deeds that unlock the traits and skills that are key to successful, flexible higher-level play. It can also be quite expensive being a guardian, due to the tremendous amounts of repairs you have to make - but a kind kinship will help you out there.
The Guardian should be leading any exploration of instances, and is best deployed in front of the fragile healers and nukers, but close enough that he can turn and reclaim aggro from them without moving too much. Attack slowly around a Guardian and let him attack first, so that he can build up and retain aggro - it's a lot difficult to take enemies away from someone else than it is to attract and hold them in the first place. Dwarves are the preeminent Guardians, but Humans can also tank perfectly well.
Burglar is one of the best classes to solo. The role in a fellowship is to keep enemies weak through debuff and CC and set up conjunctions to take down tough bosses.
Burglars excel at being dead sneaky, using their stealth skills to get around easily in solo play but unlike Rogues in that they're not so great at dealing damage though if they attack from stealth or behind, they can do great burst damage. Terrifyingly, Burglars can tank quite well for about a minute, but this is a really short term solution whilst the main tank is healed. After their heals run out and their massive variety of stuns and debuffs are used, all their skills take a long time to cool down, so then they're pretty much dead. This illustrates their survivability, often a Burglar will be the last man standing, being unable to aggro enough to draw enemies down on him.
In solo, Burglars can kill enemies one on one and get away with it. In fellowship play, they should be the conjunction experts, knowing when to trigger one and what colors each player should pick to get the maximum benefit and then they should just wander around, stabbing from the back where possible and performing a general CC role. If it all goes pear-shaped in an instance, Burglars have enough skills to give the essential minstrel a chance to get away.