Explaination of Component palette in BPEL

Hi ,
i am new to BPEL and have been asked to work on BPEL without any prior training :(. When i open Jdeveloper i find a component palette which has foll options
1. Code Snippets
2. Preferred Components
3. Proces activities
4. Services
5. XML
Can someone explain from where to study about them or what they are and what are details of the various options provided by them

If just learning, the options that will be most useful is the Process Activities and the Services
Process Activities are the activities to help build a BPEL process
This link give reference to all these activities.
http://download.oracle.com/docs/cd/B31017_01/integrate.1013/b28981/introbpel.htm#CIHEDJFJ
the services are the partner links / adapters avaliable for you to use.
Most of the time you will use the Process Activity view.
cheers
James

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