Where can I find a certain Pokemon/item/move?

                
Moves:
https://forums.pokemmo.eu/index.php?/topic/89406-storyline-guide-hm-locations/&tab=comments#comment-1572997 for HMs
https://forums.pokemmo.eu/index.php?/topic/125060-tm-shop-locations-and-catalog/ and
https://forums.pokemmo.eu/index.php?/topic/56005-updated-all-tm-and-hm-locations-for-all-regions-shops-for-these-tms-are-in-kayninexls-guide/ for TM moves
https://forums.pokemmo.eu/index.php?/topic/123438-pokemmo-tutor-moves-listing-and-requirements/ for tutor moves
"Special" moves can be bought for BP in the Trainer Tower/Battle Frontier/Battle Subway
Items: https://forums.pokemmo.eu/index.php?/topic/111967-pokemmo-item-dex-2nd-edition/
Mons: https://forums.pokemmo.eu/index.php?/topic/106910-pokedex-pokemmo-version/ (requires you to be logged in on the forums)
INFORMATION BELOW IS OUTDATED, AS SINNOH HAS BEEN ADDED RECENTLY AND LOTS OF THINGS CHANGED
https://forums.pokemmo.eu/index.php?/topic/51560-pokemmo-guide-implemented-pokemon-locations-held-items/ for single encounters Kanto/Hoenn
https://forums.pokemmo.eu/index.php?/topic/76530-pokemmo-locations-2019/ for Unova
https://forums.pokemmo.eu/index.php?/topic/94253-horde-guide-2019/ for hordes
Items:
https://forums.pokemmo.eu/index.php?/topic/76837-pokemmo-item-dex-2019/ 
https://forums.pokemmo.eu/index.php?/topic/76529-storyline-guide-kanto-hoenn-sinnoh-unova-complete-walkthrough-all-items-hidden-items/
https://forums.pokemmo.eu/index.php?/topic/77124-pokemart-item-locations/