Any Kit in my kit stash is a good kit!
But seriously, I think that the Revell 1/48 re-releases - the Se5a and the Fokker D-VII would make good first time World War One Aero kits. They are accurate enough for a beginner with some scope for detailing, and are straight forward builds - in the case of the Fokker D-VII no rigging, and the Se5a comes with rigging instructions and cotton thread for rigging (please please don't use this though....)

As they are well known aircraft, there will be lots of aftermarket decals available too (particularly for the Fokker D-VII).
They are also inexpensive kits that will suit your budget too. Being Revell they will be available just about anywhere.
HTH
All the Best
Neil