If you are seriously looking for learning OAF and start building/customization Oracle EBS applications extensions, please go through below list of blogs sequentially and practice. This process should get you comfortable building OAF components.
Introduction to OAF
How to setup OAF Jdeveloper
How to create design time connection in OAF
How to create an OAF Project
How to create run time connection in OAF
How to create Order Creation page in OAF
How to create Order Search page in OAF
How to build auto customization search page in OAF
How to create an LOV in OAF
How to personalize OAF Pages
How to do controller extension in OAF
How to do AM Substitution in OAF
How to create a train step process in OAF
How to deploy OAF Components
FAQs (Frequently asked questions) in OAF
Additional Practice
How to create a drop down list in OAF
How to create a table to display data in OAF
Introduction to OAF
How to setup OAF Jdeveloper
How to create design time connection in OAF
How to create an OAF Project
How to create run time connection in OAF
How to create Order Creation page in OAF
How to create Order Search page in OAF
How to build auto customization search page in OAF
How to create an LOV in OAF
How to personalize OAF Pages
How to do controller extension in OAF
How to do AM Substitution in OAF
How to create a train step process in OAF
How to deploy OAF Components
FAQs (Frequently asked questions) in OAF
Additional Practice
How to create a drop down list in OAF
How to create a table to display data in OAF