There are apps that allow you to block your access to websites, but most won’t be available to you on a public computer. One technique is to schedule a timed increment of internet surfing (10 minutes?) as a treat after getting a block of work done (read 25 pages/ do 4 calc problems/ write 250 words, etc.) For more help with time management and study skills, contact the Connors Family Learning Center (bit.ly/BC-connors) and ask about academic coaching.
There are so many. You should ask again so you get suggestions from more of my helpers. But here’s one: Use Worldcat and the magic of interlibrary loan to request books and movies from anywhere. Example: Find an obscure movie on IMDB, search Worldcat, find out BC doesn’t have it and hit request (elapsed time 30 seconds). A few days later get an email when the movie arrives. One of my helpers is watching something that came from a community college in Oregon. Worldcat is linked at library.bc.edu, or it’s bc.on.worldcat.org.