Catch Pokémon
Use Pinap Berries before catching
Transfer extra Pokémon to Professor Willow
Walk with your Buddy Pokémon
Hatch Eggs
Complete Research tasks
Participate in Raids
Trade Pokémon
Feed Pokémon in Gyms
Use Rare Candy from rewards
Use Rare Candy XL for XL candy
Mega Evolve the same Pokémon family for bonus candy
Catch evolved forms for more candy
Use Candy from events and bonuses