Hello, some would say don't turn it on for a while. Place in warm airing cupboard for a few days. Or place in a bowl of dry rice for same duration.
Maybe if you have kept packeted dessicants from past purchases like shoes, trainers etc. Dessicants draw out moisture.
Or try a hairdryer.
Loads of tutorials out there, here's one. Google more using different web browsers. Duckduckgo, Yandex, Yahoo, Bing etc. Don't just rely on google!
https://discussions.apple.com/thread/2719392
Regards