Firstly I would forget Adobe Photoshop - you don't need it to transfer photos. Sync photos from is the first requirement on the Photos Tab when you have connected. After browsing to the folder containing your photographs you will tick the little square next to Sync Photos from Pictures. I assume you have several folders within Pictures - these will all be listed - tick in the box against those you want to synchronise.
The most important thing is to click the Apply button in the bottom right hand corner. Then synchronise - come on I'm 78 you can do it.
If later you want to take a folder off - deselect it - click apply and you will get a note saying they are being removed from your iPod Touch or iPhone