One of the professions in Rift is butchery. Here is everything you ever wanted to know about butchery, including maps that show locations of trainers.
http://rift.incgamers.com/guides/Butchery
Telarapedia has a list of dropped and trainable recipes for butchery.
http://telarapedia.com/wiki/Butchery
Zam's Rift wiki has a Defiant butchering guide as well as a list of butchery quests plus other information as above.
http://rift.zam.com/wiki/Butchering_%28Rift_Profession%29
Can't find heavy leather? It sounds as if one needs to move to a new area and find higher level skinable mobs.
http://forums.riftgame.com/archive/index.php/t-53292.html?s=a21996d169ec5bd63429d657746ff25c
The online Rift Manual (page 39) says, "To gather, you must find a source. Sources are marked on your Minimap when.you.have your Track Ability active, and they shine and sparkle when you’re close enough to see them. Stand by the source and right-click on it. After a few seconds, a Loot window opens, with one or more items to gather." The gathering skills include butchery, foraging and mining.
http://www.riftgame.com/en/docs/RIFT_Manual_EN.pdf
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