Sybase for Oracle Users

[Leslie Chaim]

Is there any book on Sybase for Oracle users?
I am very good in SQL (and some of PL/SQL) and just want to know the differences between Sybase and Oracle. I am also looking for some Transact SQL intro perhaps with some comparison to PL/SQL.
Otherwise, can you recommend any intermediate-to-advanced Sybase book which touches on the following:

Advanced SQL

Procedures (functions) and triggers

Using ISQL(w)

Thanks,
Leslie