This is good for a first map. It has many technical issues, but the layout isn't that terrible. Don't get discouraged!
If you ever feel like the map is getting too difficult to work on, feel free to start a new one. Making many unfinished maps is nothing unusual.
I'm not sure if you know this, but versions are usually alpha (a) for untextured maps, beta (b) for maps that are close to being done, and release candidate (rc) for maps that are finished.