I want to add some photos but haven't worked it out yet?
If you click on 'add an observation' a screen will appear for you to put in the title, date, description etc. You can then choose the location on a map and underneath this is a section called 'Upload new photos'. If you click on 'Browse for photos' (an orange button) you can select a file from your computer, double-click on the one you want and then click 'Upload' (an orange button). It will then take a few moments to upload your file and you should see a thumbnail version of it. You can add more photos the same way or if you're happy just click 'Save' at the bottom of the page (another orange button!)
Hope that helps :-)