Read docs, try, google, try, ask.
Do not ask too early, come up with something you already did when asking. But don't hesitate to ask when you're stuck.
No body wants to leave you on your own but you must try something before you ask.
Do not be afraid to share your opinion. It could be that your view is wrong then you need to correct it. But also it could be you have a point and it will be useful. The first will be helpful to you, the second to everyone in your team.