Will self adhesive tile paper stick to plaster or do I need to do something with it first? I only have basic DIY skills and am trying to update my kitchen a little whilst I save up for a new one.
I would do a thorough cleaning, dry, prime it and put it on
I would use some kind of a primer. You don't want chunks of tile paper adhering to the plaster when it's time to remove it.
According to the size of the area, this could be a very expensive and difficult job, so I think you should do a lot of planning before "jumping in".
go for it. if your plan is to rip it all up in the future anyway it doesn't matter how bad a job you do. it will stick.