Hi if you are looking for SAP-HANA
please refer this.
 a very good site 'LEARNBI'

http://dailylearnbw.wordpress.com/2012/11/15/experience-hana-website-real-good-collection-of-hana-related-documents/

SAP-HANA
Videos available at HANA Academy

http://www.saphana.com/community/resources/hana-academy
Technical Documents – SAP HANA from experience hana website Real good collection of HANA related documents…
http://www.experiencesaphana.com/docs/DOC-2171?goback=%2Egmr_3683024
Videos available at HANA Academy
http://www.saphana.com/community/resources/hana-academy