There are many tools available for issuing LDAP queries. Queries should be issued to ginseng.csclub.uwaterloo.ca. The search base you almost certainly want is dc=csclub,dc=uwaterloo,dc=ca. Read access is available without authentication; Kerberos is used to authenticate commands which require it.
ldapsearch -x -h ginseng.csclub.uwaterloo.ca -b dc=csclub,dc=uwaterloo,dc=ca uid=ctdalek
The -x option causes ldapsearch to switch to simple authentication rather than trying to authenticate via SASL (which will fail if you do not have a Kerberos ticket).
The University LDAP server (uwldap.uwaterloo.ca) can also be queried like this. Again, use "simple authentication" as read access is available (from on campus) without authentication. SASL authentication will fail without additional parameters.
ldapsearch -x -h uwldap.uwaterloo.ca -b dc=uwaterloo,dc=ca "cn=Prabhakar Ragde"