I just started this game yesterday and really like it so far. Despite reading the first 10 pages of this thread, I still have no idea what I'm doing, really, but it's fun.
Besides the phriasma or whatever it's called, is there anything I should hoard/hold onto?
I don't understand what the fortune rings are that I see mentioned here? How do I get them and what are they good for?
Yeah, don't let the negativity of the posters here get to you. Most of us have been playing this for a long time, maybe too long, and the novelty has dropped off for us
The basic rule of thumb is to hoard Prysma, since it's usually a better idea to buy bundles during events with those. Pull with tickets when there's a good event up. The current event isn't very good (imo), a chain story festival is a much better place to pull but sadly you just missed one. Of course if you're just starting out and need units, you can go ahead and pull with Prysma too.
Fortune rings you can either get from dailies (those 10/20 AP quests in Dawning, collect all chests for the ring), gauntlet, or by selling unwanted 3* or higher rarity units. The rings are mainly used to buy 5* characters from the ring exchange (70 rings a pop), but can be used to buy stamina/revival fruits.
A small tip: Go farm 5 copies of Dusty and Latty from the free quests that they drop in, those 2* units will serve you a long time. More information from Dusty f.ex you can find from here:
http://chain-chronicle-global.wikia.com/wiki/Dusty