well to get your first beta out you need to put it on the forum for us to download. so to do that you need to go into your pball/maps/inprogress folder, find the map, name it with a beta extension mymap_b1. then right click it,
click send to>
then click compressed zipped folder.
Then on the forum post your new thread. use additional options to attach screenshots then your map in the zip
hope that helps, have fun mapping