What are good alternatives to "hit the ground running" [closed]

immediately plunges into. The second definition of plunge into from Merriam Webster is:

2: to start doing (something) with enthusiasm and energy ·She plunged (right) into the assignment

We all know that immediately means without any delay.

The course immediately plunges into the practical details that you need to know to become more (knowledgeable about? productive in ?) X

where X is a phrase describing the focus of the course.