Hello! I would like to know why when I want to enter a certain server it tells me that I should download content, how can I download it or where can I? :'( :(
For SWBF1? you would want to contact the owner of the server and then get the maps that you will put in Addon. After all mod maps are in place then you can join.
If you tell us the map designation, we may be able to help, e.g. "Missing tat3r" can help us to find the right map.