Hi me again, I''m probably sounding really dumb but can some one tell me how I could draw a grid in OpenGL like those found in map editors like Qoole. Also can someone tell me what is glOrtho?

Firstly... the grid, just slap a few correctly space GL_LINES across the viewports, of course.
As for orthographic view, I''m pretty sure that that means things don''t get smaller with distance as they do in perspective... So its pretty perfect for something like the top or side view on a map editor.