RE: Photos
Just follow the instructions in the link Minnflyer provided. You can upload it directly from the SD card if you want. When you go through the selection process, just choose the SD card and correct sub folder. It will be called something like "untitled" or by the name of the card or camera.
I ususally open them first using preview though (just double click the picture and it will automatically open in preview). This will allow you to re-size, do basic touch ups like brightness/contrast, etc. Then I save it on the desktop or a specific folder and upload it from there. I only bother with a more advanced photo editing program if the picture is particularly bad or I want to do something out of the ordinary to it.
If you don't figure it out, let me know and I can grab some screenshots.