That's simple
You can share any item on this board, Second life Items like Mesh, textures, scripts, houses ECT
or non SL items like Music albums,books(ebooks/audio books), programs and even stuff from other games.
If you want to extract Items from Second life you'll need to download a copybot viewer which you can find here :http://goonsquad.co/forum-2.html
We have various guides to extracting which you can find in the tutorial section:
[To see links please register here]
When it comes to hosting, if your file is 10MB and under you can use the attachment feature here on the board.
If it is over 10MB then you'll need to go to
[To see links please register here]
Sign up and host your files there.
That's explained here:
[To see links please register here]