How to use a VBO

Newbie & Debugging Questions
#1

I’m trying really hard to understand this, but some of the code I don’t understand.

First off, to my understanding, this just creates the points for the triangle.

FloatBuffer vertexData = BufferUtils.createFloatBuffer(amountOfVertices * vertexSize);
        vertexData.put(new float[]{-0.5f, -0.5f, 0, 0.5f, -0.5f, 0, 0.5f, 0.5f, 0});
        vertexData.flip();

Now this here would initialize it?

int vboVertexHandle = glGenBuffers();
        glBindBuffer(GL_ARRAY_BUFFER, vboVertexHandle);
        glBufferData(GL_ARRAY_BUFFER, vertexData, GL_STATIC_DRAW);
        glBindBuffer(GL_ARRAY_BUFFER, 0);

and under my gameloop this would bind/draw the triangle?

glBindBuffer(GL_ARRAY_BUFFER, vboVertexHandle);
            glVertexPointer(vertexSize, GL_FLOAT, 0, 0L);

I think this just tells you it’s a triangle.

       glEnableClientState(GL_VERTEX_ARRAY);
            glEnableClientState(GL_COLOR_ARRAY);
            glDrawArrays(GL_TRIANGLES, 0, amountOfVertices);
            glDisableClientState(GL_COLOR_ARRAY);
            glDisableClientState(GL_VERTEX_ARRAY);

As you can see, I’m not so knowledgable on VBOs. Can i get some explanation or a link to a good in depth tutorial for this?