Here is an excellent article on using org-mode for project planning. If you manage to use org-mode to the extent listed on the article, you pretty much would have learnt most things about org-mode.
Though the article is a bit old, it's still a good pointer on using org-mode.
Here's a simple way to place the logo where you desire when you want to get your image on your slide in beamer. Note that you'd need the Textpos package to place the image where you want.