Also on the subject of mesh topology, I will point out that you can create the same effect as a 32-vertice circle with a subsurfaced 8-vertice circle, making a cleaner and easier to use mesh.
Secondly, you have an incredible amount of triangles, which need to be removed. From the shapes after the nose area it looks like you have subdivided it, I would not advise subdividing a part of the mesh connected to another as it creates triangles.
To remove edgeloops, if you have blender 2.40, you can select an edgeloop and choose edgeloop when you press delete. However, with a mesh filled with triangles this does not work - as before, Alt-J might sort those out. However, I found that Alt-J tended to make a ‘vortex’ effect with edgeloops spiralling around the object rather than making straight lines - probably not such a good idea, as it leads to triangles.
Apart from that, you are doing a very good job, especially for a new user! I doubt I could model this well at the time I was at your experience level, so apart from the mesh issues, this is excellent work indeed.