Hello Jon and welcome to this wonderful, friendly and supportive forum.
You'll soon find lots of people offering their advice.
One first question would concern your preferred scale: 1/72, 1/48 or 1/32? There are great options for a first model at each scale. In Roden, Eduard and Wingnut Wings we have a fair bit to chose from (and, of course, there are other manufacturers), though never enough!
Were you to chose 1/48 scale, I'd go for Eduard rather Roden. There are quality models in each catalogue though with my less than nimble fingers I find Roden less forgiving. So, if it were something at this scale, I'd go for a Nieuport N 17 or an Albatros DV from Eduard.
Best wishes
Nigel