(apart from throw it away!)
No need for that.
so i got someone to install standard windows XP
crap. I mean I wish you had done the install instead of someone else.
This makes explaining things harder.
For starters, My 1st attempt since it uses Openbox, based on Ubuntu 14.04 which supports touchscreens real well but my only concern is ram and cpu
But that being said. I'd make a live usb of
The 32 bit i386 version
Making live usb
If you were more experienced. I'd recommend something like
But not a lot of documentation I can find for your gear,(Arch), while Ubuntu has a lot of info on your tablet.
Just be prepared to take your time. Don't get frustrated. I already know I recommended a chrome browser
based distro which with your specs. Is kinda heavy.
But Ubuntu has Dillo, Links2, Qupzilla, Midori, Netsurf..........
among many other browser choices.
If I was a neighbor. I'd throw Ubuntu minimal iso on it with a fluxbox window manager and onboard keyboard with netsurf browser with claws mail and mpv player with audacious and backup browser would be UZBL since it plays youtube in terminal. I'd also install Youtube-Smplayer along with rox file manager and a rox terminal or evilvte terminal. Mousepad for text editor.
See? A lot of TLC goes into making a smooth running system. But like motorcycles which is my bread and butter. Customizing a motorcycle and customizing linux takes time and knowledge.
Edit: Oh for photos. I'd start with feh.
Otherwise. Everyone could do it.