I would also support Prince 2 Practitioner, for the reasons provided by the earlier responses. One word of caution, however: it teaches you the fundamentals, but it is not realistic to expect that a week's training course can take someone from project naivety to project expert. The title "practitioner" is a bit of a misnomer on that basis! - but it is a great way to start.
I also reckon that the official OGC course manual (Managing successful projects with PRINCE2) is a valuable reference source, especially Appendix A, which provides product description outlines for all of the products that you need. (It is also a very helpful resource to use during the exam!)
If sitting the exam, you will be able to take your manual in with you and refer to anything that is written (but not stapled or otherwise inserted) into the book.
Good luck if you go down this route.