I have found a little hard to find good Oracle Developer tutorials on the web in the past, but here are some links that you might find helpful:
<a href=”http://www.sba.oakland.edu/oracle/Oracle/Ora_Tutor/Forms%20Tutorial/Forms%20Tutorial/9iForms_L1.htm”>Tutorial for Oracle10g Forms / Reports</a>
<a href=”http://www.oracle.com/webapps/online-help/forms/10g/state?navSetId=_&navId=0″>Oracle Forms official documentation</a>
<a href=”http://download.oracle.com/docs/cd/B25016_08//doc/dl/bi/B13895_01/toc.htm”>Oracle® Reports Building Reports</a>
<a href=”http://download.oracle.com/docs/cd/B25016_08//doc/dl/bi/B14364_01/toc.htm”>Oracle® Reports Tutorial</a>
If you find some specific problems/doubts, feel free to ask.