I'd like to clear a couple of things up from Orberg's LLPSI Cap XXXVIII.
1. Quae postquam Helenus vates divino ore fatus est, dona magnifica ad naves ferri iussit.
Quae is neuter nominative plural - after which (things / events).??
2. Praeterea hoc unum ante omnia te moneo: semper Iunonem primum adora atque illi deae potenti maxima sacrificia fac!
What is 'Praeterea hoc unum ante omnia' ? I think it means Besides, one thing above all I warn you..
but I'm not sure how it works. 'te moneo' is easy. 'te' is accusative. But what is 'hoc unum'? Is it neuter nominative or neuter accusative...and why?
Or does 'hoc unum' refer to a previous point. 'Besides this one thing....above all I warn you....?