Check those links:
http://help.sap.com/
a piece of the information there:
Welcome to the SAP Help Portal
The SAP Help Portal provides web-based documentation for all SAP Solutions.
This enables you to search the online library for the right information where and when you need it.
SAP Help Portal
This website houses and makes available all online documentation (SAP Library) for SAP solutions.
It also has additional information about documentation, education services, and information design at SAP.
The SAP Library is a comprehensive collection of information about the relevant SAP products.
Its contents can be accessed either from the SAP System via the help menu items SAP Library or Application Help or directly from the CD-ROM on which it is delivered.
The SAP Library is created, translated, and managed using SAP's standard authoring and translation environment, SAP Knowledge Warehouse.
http://www.allsaplinks.com
a piece of the information there:
Welcome to AllSapLinks.com. We have just started this web site with a great intension of helping sap abap job seekers and sap
abap developers. In this web site you can get information regarding all sap abap.
Areas we are trying to cover in this website includes:
areas like reports, sapscripts, smartforms, sap abap faq, bdc, conversions, ale, edi, idoc, bapi, badi, alv, user exits, sox, lsmw,
enhancements, customer exits, rfc, and modules like sd, mm, pp, pm, hr, fico and new technologies like netweaver, xi, scm, sem,
crm, apo, sap abap faqs etc..
As we have just started this web site, we may not be able to cover all the topics specified , but we are sure that in due course of time
we will publish all important information. We wish you all the best.
http://www.sapabapfaqs.blogspot.com/
http://www.sapmodule.com/
http://www.geocities.com/rmtiwari/
http://omsapworld.blogspot.com/
http://shathees.blogspot.com/