What you need to do to thrive in an Agile Software Development Team :)

1. The art of getting things done:
Building Software is a lot about how to get things done. Small wins are very important in initial days. Try to have targets in mind, small problems to solve, small features that can go into production.

2. Situational Awareness:
People (who is who), technology stack, way of working and cultural aspects of the team.

3. To do list:

You can follow this for time as ritual, or "deliberate practice".
Make a to do list twice, one for the present day and one for the next. Let your to do's become the engine of your initial days of growth.  

4.  Adaptability and self leadership:
You should always look for aligning your day to day tasks or activities to customer's goal or agenda.
Self leadership efforts to know your environment, to understand the way operation runs etc., comes handy when you are actually asked to deal with situations ranging from solving a technical problem to negating with customers or stakeholders.

5. Learning and early failures - Don't let silly mistake ruin your days after 6 months or an year. The early you make mistakes, the early you will have an opportunity to learn from your mistakes. Be courageous (doesn't mean act foolish, without knowing the context),
keep an open mind and learn little something everyday, until you are not comfortable enough.