Knowledge Management

Question:
Hi ,
i am an Oracle DBA(OCP) ,plannning to take SAP on Oracle admin certification, I was looking for books for SAP Web AS but could not find. Does a basis admin book prepare me for SAP Web AS. Can anyone let me know the major difference between basis and web as, is basis replaced by Web AS.
Would appreciate any help and information,
thanks,
Venu.
Answer:
basis admin book for which SAP version?
The new books are about WAS already (i.e. SAP version 6.10 and above)
the cheapest information source: -> Documantation -> SAP NetWeaver
Regards,
Zav