Also, in terms of forging what do you have to do exactly its kind of confusing?
that said. to turn ore into metal you need a smelter thing, it looks like a giant kilmn(spelling?) . you need to go to whiterun to find the first one closest to where you start. go up to it and click it if you have enough ore the thing you can make will be highlighted in white
the forging is simple. click on the pit of embers,look at what you want to make. you unlock different types of armour by putting skills in the black smith tree. you cant make orc stuff till you unlock it for example. you start with iron and hide.
at he bottom it tells you what you need. most need several "ingots" of the metal and leather strips. leather strips are made from leather, which in turn is made from animal pelts and hides, normally around a blacksmithing area is a tanning rack, it looks like two sticks with some canvas stretched over it. by using it you can turn pelt into leather and leather into leather stripps. bracers and daggers require the least materials. you can also chose early on if you make heavy or light armour. so steel can make heavy armour plate or light armour. you are noisier and slower in heavy armour, but quieter and quicker in light armour. and it weighs less so you have more inventory capacity.
i dunno what else to tell you apart from that. warriors wear plate normally, rogues normally wear light armour. and mages can just wear clothes and use magic, or if you like you can make plate armour and still use magic, but it weighs you down. and you cant carry as much as likely if you're mage you have put skills in magic not stamina
nothing stops you using anything i can use a bow or a dagger or magic or fireballs. just everything is pretty weak until you put skill points in a class. and that decides what your best off using. For the grind stone you need the metal ingot of the type of material the weapon is made out of and the work bench does the same but for shields and armour.