Welcome new people!

For socials, I would recommend pretty much any. =) Try them all out! It never ever hurts to explore. Exploring is what FFXIV is all about

For endgame, I would recommend Triple Spark (shameless advertisement ^^) TS is one of the original endgame goaled LS's that were made back in the beta stages of FFXIV and has survived as it was intended to be, without breaking or merging. The standards are not JUST based on multiple 50 jobs, and careful selection of applicants have allowed TS to keep stable this far.