I need to upgrade my equipments , what are fast ways to get materials like linen , copper coil , metal etc.
on which tiles i get more materials
when you are upgrading/creating equipment, pressing on the material will usually will tell you what monster or tile that may drop what you are looking for. The tiles and monsters don't guarantee you'll get what you need, but they are free.
Other than that, if you buy some of the packs, look for ones that will provide that material you are looking for.