To find books, DVDs, maps, sound recordings, manuscripts, and much more - everything except articles - use a library catalog.
OskiCat = most UC Berkeley libraries
MELVYL = all UC campus libraries, including all UC Berkeley libraries
What's the difference? more details here
For each item make sure you know the name of the physical library, call number, and whether or not it's checked out, library use only, etc.
Finding Literary Criticism - Books @ UCB
Start with OskiCat to find literary criticism in book form in the UCB libraries.
Criticism on very famous works may be searched using the title of the literary work, but don't forget to search by author:
idylls of the king criticism
alfred tennyson criticism
or by keywords:
morte d'arthur textual
For each item make sure you know the name of the physical library, call number, and whether it's checked out, library use only, etc.