Hi,
I think this is the right place for this, I am doing the noob to pro tutorial and am at the stage of adding smoothness to the model but am having trouble with the left arm, see pic below.
Judging from the small screen (which is probably a little hard to do…) I’d say you need to flip the normals manually. This happens sometimes when you merge symmetrical models which aren’t perfectly clean.
So, go into edit mode, to Mesh tools 1, enable “Draw Normals” and look out for errors (like faces with normals looking inside sourrounded by faces with normals looking outside). I think you’ll get it once you see it.
keep in mind im a nooooob realllllly, but i think if you select the entire “man” and then set your subsurf to a view 1 setting then back to like 4 then back to 1 you should be all set… something like this happend to me… if that doesnt work you could easily delete that arm and redo it.