Rec Request =)

Hiya I'm not sure this is allowed but I've been lurking over at MerlinxArthur for a while and the other day someone mentioned RPF which inevitably lead me here. I would quite like to have a go at writing some RPF but I've never done it before so I was wondering if anyone had any recs so I could get a sort of flavour of whats going on. Er.. if this isn't allowed I'm sorry and feel free to delete this post with no hard feelings XD 
If it is allowed then I hopefully await responses *crosses fingers* Thanks in advance =)