I finally picked this up. Any spoiler free recommendations?
-In the monastery you don't have to talk to every student every month. It's nice for world and character building but it's not necessary.
-If you don't pick Blue Lions, make sure Byleth improves his/her sword stat cause Felix is an elite tier recruit.
-Without spoilers you should either do Edelgard's story first or last. Don't read too much into it as every possible route has grounding in the overarching narrative.
-Others might disagree but I really wouldn't use fishing to buff your professor exp unless you're close to leveling up. The XP gain is minimal.
-Make sure you're planting crops at the greenhouse every time you explore the monastery.
-I'd say don't skip any paralogues or monastery side quests if you plan on doing more than one route. Farming your renown stat will be beneficial to future runs.
-It's worth it to plan your character upgrades ahead of time and set goals to boost necessary stats to units that wouldn't otherwise be able to acquire them in battle as some advanced classes.
-Don't neglect buffing Byleth's stats. Focus on about three or four that you buff from the other monastery faculty for purposes of recruiting other students.
-There is a moment in the story where you find a place in the monastery that will essentially end the entire month. Don't do this in the first week. Wait till the second to last or last week to explore the monastery again and then go back to that spot. You'll miss out on a lot of progression if you do this (I made this mistake my first playthrough)