Convert fundraisers into ordinary posts

I have no prior website design experience and am setting up a site for a charity using wamp server at the moment. I bought a template (Non profit from Organic Themes) and it has a slider and a features board on the first page that show blog posts specified by categories. I would like this to display my fundraising posts. I tried downloading Custom press as I read elsewhere on the site this would allow the conversion I need, but I am not getting anywhere with this. Is there instructions anywhere for this or can this be done a simpler way.

Any help would be much appreciated
Thanks in advance