Quote Originally Posted by Rathanyel View Post
by the way do monster drop any useful materials for crafting, or the only thing you need from mobs are shards and crystals? cause ive noticed that i can buy most of the materials (except shards and crystals) from the NPCs in each guild but i don't know if those mats are only for the low lvl craft.
Right now, every drop from any mob in the game can be used as an ingredient in some craft. In fact, there are several materials -- for example, boar leather -- are not sold by NPCs at all, so they can only be obtained from mob drops. You can only get them from killing mobs, or buy them from other players in the Market Wards.

Fair warning, though. Kobushi has wisely pointed you to a couple of my favorite databases for recipes. Unfortunately, since the recipes were completely overhauled in patch 1.19, those databases are out of date. They do not yet have the new items and recipes. So until those databases are changed to reflect the recipe changes from 1.19, you're better off using the recipes on Lodestone. You can get to those by going to the Lodestone front page, then clicking on "Synthesis."
and lastly is there a warehouse or a bank where i can store things from my inventory there so i don't have to carry useless staff with me?.
As Robert and Kobushi said, you get lots of extra storage by "hiring" a retainer. (They're actually free, but you're supposedly "hiring" them.) Look behind the counters in the Adventurer's Guild in each city. You can talk to an NPC, who will walk you through the process. You can hire two retainers, and each retainer can hold an additional 150 slots of inventory (plus each has 10 slots for your bazaar).

Another benefit of hiring a retainer is that you can start selling stuff in the Market Wards. Place items into your retainer's bazaar, and then go into the Market Wards, and "call" your retainer. Your retainer will stay there, selling your stuff, for several days. Then you can re-visit your retainer and "exchange items" to collect the gil you've made.