My teacher assigned a task to me. In short, it is to use a not
friendly web interface to upload many pictures(once a file).
As a ruby novice, I think that it can be automatized.
But I even don't know where to start.
How to send a POST Http request? How to ensure my pictures have been
upload completely? If the system requires me to login(it does), what
should I do with session?

Need some advise.

-- 
Lai, Yu-Hsuan