Westing's Guide to Processing Mats

Disclaimer* info mentioned here is a combination of other guides and own game experience^^ (mostly the latter).

** NEW PROCESSING FEATURE** after maxing storage capacity for mats you CAN'T process anymore of that material
Step 1:
This may sound ridiculous but I highly suggest in investing in either a blacksmith or alchemist, or at least into processing skill. It's helpful for long farms like bnut and mmh by getting rid of unnecessary mats.

For new players not all mats are helpful. Processing turns these useless mats turn then into metal, cloth, beast, wood, medicine, and mana. These are used to make armors, weapons, etc. Mats can be processed at blacksmith or synthesist, but there is a fee, and they are all the way in the city. So invest in processing skill for at least one Chara slot.

Step 2

Find some good places to farm mats!!
There are TONS of places to farm mats... the ones I mention here are my personal favorite
Ruined Temple
Lots of people are here to get small articles so finding a gob party isn't very hard. The extra mats from bandanas and other metal mats are useful for lower levels in need of mats^^
Athema
Before pova farm there were tons of people at Athema. This places drops flower nectar (used for revitas) and for medical mats. This place is good for newer players because kijimu are only level 10 and very easy to farm and kill.
Zoktzda Ruins
Lots of player here!! Especially on international ch. Lots of people come here in hopes of selling skeleton bones for some spina, I use this personally for beast mats and mana mats. (Skelly bones sell well at shop and mana mats sell well on board btw)(ps good place for intermidiate players and check out the reversed gravity room it's really cool)
New Moon Palace
This place is well known for magic marionette heart (mmh). This place is really meant for like 60+ due to the mobs. Mmh gives lots of exp and the marionettes (sword and mage) both drop mmh aswell as a boat load of metal mats. Sword marionette drop 2h sword good for beast mats and mage marionettes drop magical devices used that can be processed into mana mats.
Ancient Empress tomb
This place is good for lots of stuff. I come here mostly for mana mats but farming caspys and roars lead to lots of cloth mats as well as mana mats. (mostly higher level player)
Lonogo Canyon
I like this place mostly due to the povas. Povas drop med mats, wood mats, and flower nectar. They also drop mistletoe ring, which is basically more wood mats, but there are some occasions when it drops double slotted ring. Double slotted sells nice, if not slotted I highly suggest processing because it takes up space.
Nisel Moutain (Area 2)
Nisel brings everyone soo much joy due to its leveling potential with relatively high exp quests. Unfortunately, with this beautiful gift from developers there is a downside. There are tons of wood mats. Throny twigs and wood chips are useless. Processing these will be helpful for room space to fill up on bnuts and n wood while maxing storage for wood mats. (this place ranges from mid levels to high levels) Finding good parties may be tough but exp and mats are worth it in the long run.
Underground Channel
This is by far the #1 place to get medicine mats. The blue slime drop three kinds of medicine mats (and blue a add dye, but that's a different topic all together ). Farming is easy for all levels! These slime have are low level so defeating them will be a cinch!! It doesn't take much time to max medical mats here if you have a good party.

Step 3
This also may sound ridiculous but share this info with other. New players have a hard time understanding the production aspect of the game, and sometimes people don't know the best place to farm so the spend hours upon hours wasting their time.
Also be kind to other!! (You don't have to but it's highly suggested!)