Getting back into the swing of things

[TouchandFeel]

Also, when mobs 'link' (As in, you pull one and multiple ones come), do they share hate, or do you have to build up the hate on each one individually? (Using Overpower as an AOE for example)

Separately. When they "link" it only adds you to the other enemies aggro tables by giving you the minimum amount of agro, similar to as if you had gotten too close to them. You then have to build agro on each of them, hence why Overpower was suggested, because it is an AoE agro ability and can hit entire groups in one go which is important because it keeps up agro on the entire group which is needed since heals from the healer will build agro on all the mobs in the pack and the DPS will most likely be using AoE attacks and also be building agro on all the enemies they hit.

Abilities like tomahawk or only really good for tossing out one as you move to engage a mob for that smidge of extra agro before you are close enough to engage fully or if you are doing a multi-pack pull and need to tag a mob from range to agro them as you run past to head to the next pack.

Also, if you are not using combos and are just mashing abilities, I highly suggest you look over guides and ability tooltips for your job and get trained up on the basics at the hall of the novice in game.

Lastly, this is not an exploration-centric MMO, sort of like GW2 or some older MMO's, it is a straightforward "theme-park" MMO based around team content like dungeons and raids. While there is some amount of solo content, the majority of the content is going to require you to group up to play.