General guides:
http://www.maraforce.com/

http://www.marasites.com/?name=Shera50

http://mararainbow.webs.com/index.htm

http://www.marasites.com/?name=ChocoShay

http://www.marasites.com/?name=FireClaw

http://mara-helpers.webs.com/gourmetfood.htm


Battling:
https://sites.google.com/site/marabattleguide/home


Pet trading and more:
http://mrpeaspettradingguide.weebly.com/pet-values.html
(It's missing Vlad: Worth 7mil, trading value very high. People may expect offers more than 2x their worth)

http://www.marasites.com/?name=cookiedoe
(site slang list at the bottom)

Stats guide:
http://angelshadow.webs.com/Stats.htm


Restocking:
http://damager.co.uk/MP_RestockP.htm

Starting on level 21, since I apparently progressed that far sometime in the past...

level 21 - Xoi Poison. Had to buy 23k RP
level 22 - Hump Poison
level 23 - Tantua Poison. Probably start asking for 2 poisons soon...
level 24 - Paffuto Poison. Rewarded Voodoo Costume <3
level 25 - Tasi Poison Oh my gooood When is it good ask for 2? So nervous~
level 26 - Echlin Poison I'm relieved, thought it'd be two this time xD
level 27 - Nino, Tantua, Echlin Poisons. WOAH xD Had to buy 13k RP, thank you PC forum, you have never failed me <3
level 28 - Chibs Poison!
level 29 - Sybri Poison. Woop woop, Sukado has now read Book of Fate xD
level 30 - Reese Poison
Thank you for finishing my mission on time. Here is your reward..
Witch Yuni Potion and 750,000MP!!
Congratulations! You found the 'Fates' Hidden Avatar!


Total for now:
474k RP