What are some basic mechanics that the game doesn't tell you?
Pals need level 2 mining to mine ore.
Capturing a pal from behind gives a capture rate boost.
To ride a pal:
Unlock the pal's specific saddle in the tech tree.
Craft it in the pal gear work bench. It will appear in the key inventory tab, not your main inventory. Also the game will let you craft multiple but you only need one.
Summon the pal and hold
EF.
You don't take fall damage while riding a pal
Crafting items, building stuff and repairing gear will all pull items chests in your current base. No need to carry around wood or stone.
Ores, trees and such respawn after 24 in-game hours
Raw berries don't restore sanity, so your pals will slowly go insane and refuse to work. Cooked food, hot springs and fancy beds all restore sanity.
Ancient technology points are earned by killing bosses. Tower bosses gives 5, roaming bosses give 1.
Press B then C to instantly deconstruct things you've built.
Fire pals are easier to find at night because they glow.
Press 4 to command your pals. Two important ones are don't attack if it keeps killing pals before you can capture them, and attack aggressively when fighting raiders.