Looking for updated AST learning material

[Cynfael]

So, as I understand the sect swapping.. Is it somewhat accurate to say that you would prefer diurnal sect for trash dungeon mobs and nocturnal for big boss fights?
Leaving aside the 2nd healer of course, I guess if you have a SCH with you nocturnal seems kind of weak.

Noct AST is overall a stronger barrier healer than SCH; however, you would want to complement the SCH's shielding with Diurnal rather than fight for shields.

Personally I prefer Noct unless paired with a SCH or another AST using Noct; both sects are strong, so you can play how you want, barring the aforementioned suboptimal pairings.