I got into Guilty Gear via Romolla streams* and fell in love. I'm a waifu warrior, I adore Millia Rage and even though I suck total ass at Strive and +R I have fun playing and getting to see my beautiful wife :]. Fighting games have just been fun to get into in general--if you haven't, you should try tuning into a tournament or slapping buttons with your friends at an arcade, and you might fall in love with a character or with the rush of pulling off a sick move and winning the round.

wanna rock?
Guilty Gear kicks ass and you should get into it
--> solradguy's archive is amazing
--> woolievs has a great lore playlist
--> the new wiki and dustloop.com are your
best friends

*Romolla doesn't stream FGs anymore but she is hilarious and you should watch her anyway. Her youtube has a great backlog too.