Normal content felt a lot harder in the beginning - I mained SCH, and I went from fairy healing 99% of dungeons to needing to heal together. It took me several days of queueing to get a party that could clear BisHM. Quests gave HQ gear which was nice, split across multiple NPCs - I think it was usually one with melee gear, one with caster? So I collected a set for SCH plus a set for tanks. I'd recommend on selecting one job to use to go through the MSQ / unlock everything first. I did have to buy white gear in Ayzs Lla at the end just to be able to queue into the first level 60 dungeons - min ilvl was a bit of a drag.

We only had tomestones of law at the start, with esoterics coming a few weeks later. The alex raids were also delayed a few weeks, to give people time to enjoy the new content without feeling rushed to get to cap to start farming weeklies. In later patches (3.2 and 3.4 I think?), we lose the uncapped tomestone (gear went to hunt marks), the capped tomestone became unlimited, and we got a new capped tomestone.

Pretty much just sit back and enjoy. There will be a lot of changes all at once to take in.