Board Thread:Questions and Answers/@comment-94.0.210.211-20171225135041/@comment-294304-20171225140118

Fate/EXTRA is something of a jumping on point for the series and requires minimum prior knowledge, a lot of the lore and setting details are revealed to the protagonist alongside the player; likewise it isn't in continuity with FSN, Zero, Apocrypha or any of those, it's the start of a separate timeline entirely.

(though honestly I'd just recommend playing the game instead.)

Folks say the F/A anime is bad? I thought it was very good so far. Also, while I'm here don't watch Kaleid Ilya, it's not very good at all.