When I switch back to my original theme, will all the content of my site be in the same order as before?
Does this mean I would have to use the 2014 theme from then on, or can I switch back to the theme I’m using?
A wordpress.com site, not self-hosted. Would that be it- I’d need to self host it?
Yes, but I cannot seen ‘plugins’ on my site dashboard and so when I try to download them I don’t know how to implement them into my site.