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
Augusto	ow-GOOS-to (Spanish)	Spanish, Italian, Portuguese
Rashawn	rə-SHAWN, ray-SHAWN	African American (Modern)
Aldritt
Adva	ahd-VAH	Hebrew
Jerry	['dʒeri]
Genette	jə-NET	English (Rare)