Usage patterns
早速〈動詞〉to do something right away (after some cue)
I tried out the new camera right away.
〈事〉に早速取り掛かるto get started on something right away
I got started on the new project right away.
早速の〈物〉a prompt (reply, response, etc.)
Thank you for your prompt reply.
Expressions
早速ですがwithout further ado; getting right to the point; I know this is abrupt, but...