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