Is there a watered down photoshop I can purchase?
Just had a look online and its nearly £800!!!
I’ve got Photoshop CS3 you can have all for a cuppa 
if it’s just for pictures and not design stuff, lightroom is more suited imo.
only £55 online at pc world too http://www.pcworld.co.uk/gbuk/search-keywords/xx_7685_70696_xx_xx/adobe+lightroom/1_12/price-asc/xx-criteria.html