I’m trying to follow this tutorial: http://www.3dkingdom.org/modules.php?op=modload&name=News&file=article&sid=341&mode=thread&order=0&thold=0
But…when I get to the part where I have to cut the upper portion of the boot…I get lost. When I try Loop-cutting…it makes extra edges, forming triangles that I do not need. Could someone help me out, please?
use the knife tool, k
I used all the knife tools… they all give me those extra edges.
That’s the way it’s going to be in Blender. Blender doesn’t support faces with more than 4 verts/edges.
I try to not cut trangulated faces, it does make a mess of things. try deleteing the faces you are going to cut, select the edges of the now missing faces and hit the F key to fill it back in. Then try the knife tool again.
oh what i’d give for a decent cut tool…
Ok, I guess I’ll have to stick with those extra edges.
But…what should I do then, since I can’t get rid of those extra vertices and you should always stick to quad faces?
When you make the cut in the top part of the boot, use K Loopcut. This way the cut will loop all the way down the foot, between the toes, and back up the back side of the boot. This way you have no triangles, and you can finish the tutorial 
Yeah, that’s what I was thinking, only wasn’t sure if I should do it because of the extra unneeded verices/faces.
You can always use the decimate tool when you are finished to optimise the number of faces. Since all quads are converted to tris anyways before rendered by your graphics card, decimate will do it for you before hand, so you can correct any ugliness this may cause.
It is not a deficiency of the tool. Triangles and poles are just things that every one have to deal with when modeling (until we get an anasotropic remeshing for Blender).
There are many ways to deal with this, I can go for hours explaining how to correct and clean your mesh.