I've been planning on switching to a cold storage format to keep my coins but I want it to be in a way of watch only wallet from my mobile where I can initiate my transactions . I'm  currently thinking of using my old PC apart from the one I'm currently using, but I don't know how safe it is maybe I should just switch to Linux becaus it's windows , the Pc is around 2GB Ram I don't think I can upgrade that don't know if it will work for Linux or can I just use the Windows just that I've installed alot of games you know still so small to realise all those shit
In short, I need complete guide towards the set up