For Les 2 Alpes the best airport to fly to is Grenoble, or second best Lyon.

Transport

Ben's Bus 

Cars Auvergne
https://carsisere.auvergnerhonealpes.fr/

Taxi

Trans' Oisans
Tél. : 04 76 80 06 97
transoisans@orange.fr

Also:

Les 2 Alpes site official

Weather

Snowforecast weather forecast for les 2 Alpes

Ski schools:

European Ski School

https://www.europeanskischool.eu/

Tip Top Ski coaching

https://tiptopskicoaching.com/