Clio: The catalog for the larger CU community (and includes many, but not all, Law Library titles); generally the best "one-stop shop" to start your search.
Pegasus: The catalog for just the Law Library. If you don't see what you're looking for on Clio (and the resource seems law related), it doesn't hurt to search there as well.
Borrow Direct: A consortium of large research libraries where CLS students can request items held elsewhere directly.
Bluebook Online: Journal members have access to a sponsored account.
Perma CC: Creates a permanent link to a resource available on the web.
Law Library Databases: Links to every database the Law Library subscribes to- including those you might not be used to using!