I recently started creating my first shader-based OpenGL program in a limited subset of 3.2, but can you have more than one program object? I created a program object for both the vertex and fragment shaders, and attached their respective shaders to them and linked them. I started the entire program (after windowing and contexts) with the createShader function, then I compiled and attached to program, then the same for the fragment shader. Am I starting correctly?

Also, is OpenGL 3.2 easily portable to ES 2 if I use no geometry shaders? What if I do?

P.S: Here is my rendering source code thus far:

#include <windows.h>
#include <GL/glew.h>
#include <GL/glext.h>
#include <GL/gl.h>
#include "renderMain.h"
#include "fileAccess.h"

#define ULONG unsigned long

renderMain()
{
    /* Creating and Compiling the Primary Vertex Shader */
    GLuint vertShader = 0;
    vertShader = glCreateShader(VERTEX_SHADER);
    glShaderSource(vertShader, /*insert parameter*/ , /*insert parameter*/);
    glCompileShader(vertShader);

    /* Creating and Compiling the Primary Fragment Shader */
    GLuint fragShader = 0;
    fragShader = glCreateShader(FRAGMENT_SHADER);
    glShaderSource(fragShader, /*insert parameter*/ , /*insert parameter*/);
    glCompileShader(fragShader);

    /* Creating Vertex Program */
    GLuint progObjVert = 0;
    progObjVert = glCreateProgram();
    glAttachShader(progObjVert, vertShader);

    /* Creating Fragment Program */
    GLuint progObjFrag = 0;
    progObjFrag = glCreateProgram();
    glAttachShader(progObjVert, fragShader);
}