PeopleSoft is purchased by Oracle.
Oracle E-Business Suite 11i (or 12i) contains Financial package.
Oracle will continue support legacy PeopleSoft System for the coming ten years, but will transfer everything to Oracle e-business suite eventually.
Oracle Financial package is one of the most useful package of the ERP system, because regardless what kind business the company do, they will always involve finance.
You can find very good Oracle 11i training material from the web site you mentioned.
Thanks!