Hi,
Perhaps this training lab will prove helpful. It's in four parts on this website.
http://www.infopathdev.com/blogs/jennifer/archive/2010/07/01/free-training-design-your-infopath-form-template-lab-1.aspx
http://www.infopathdev.com/blogs/jennifer/archive/2010/07/08/free-training-lab-2-make-your-infopath-form-template-look-and-work-better.aspx
http://www.infopathdev.com/blogs/jennifer/archive/2010/07/14/free-training-lab-3-making-it-smarter.aspx
http://www.infopathdev.com/blogs/jennifer/archive/2010/07/23/free-training-lab-4-track-responses-from-your-event-form.aspx