In one of the previous post, Project Lockdown by Arup Nanda, I mentioned Mr.Arup Nanda’s below two articles, all time most read articles on Oracle Technology Network published articles;
– Oracle Database 10g: The Top 20 Features for DBAs
– Oracle Database 10g: Top Features for DBAs Release 2 Features Addendum
They have both detailed information as a starting point to 10g. Also they provide good answers why you might want to migrate and how more efficiently you may use Oracle, the software you already paid a lot.
Also for another great summarised information you might visit Oracle’s documentation and search for “What’s New in”. It was love in first sight for me with these ones;
– What’s New in Oracle Performance?
– What’s New in PL/SQL?
– What’s New in Application Development?
– What’s New in Oracle Database Administrator’s Guide?
– What’s New in Oracle Database Security?
– What’s New in Oracle Streams AQ?
– What’s New in Oracle Text?
– What’s New in Enterprise Manager 10.2
– What’s New in Oracle Call Interface?
– What’s New in Oracle Spatial?
Extract(Read) > Transform(Test&Apply) > Load(Learn) Blog 
Hasan ;
Thanks a lot for this all in one entry. I like the way you use the Oracle Manual. As a confession I can say that I learned to use manual by your mails at oracleturk yahoo group. Keep blogging.