dive in with both feet

and jump in with both feet

Fig. to become completely involved with something quickly, especially something new. I had never done anything like this before, but I just jumped in with both feet and learned it in no time.

Common Names:

Name	Pronounced	Usage
Andrea	['ændriə]
Jacob	JAY-kəb (English), YAH-kawp (Dutch)	English, Dutch, Swedish, Norwegian, Danish, Jewish, Biblical
Keghart	-	Armenian
Brynhildr	-	Norse Mythology, Ancient Scandinavian
Petur	-	Faroese
CirÍAco	-	Portuguese, Spanish