Welcome to BB and congrats on the pregnancy!
As others have said, it is totally understandable not knowing what to do... Get used to that feeling LOL!
In the first 8-10 weeks, you'll likely need to choose what method of care you'd like to receive. This can be a really tough choice, but make it according to what YOU feel comfortable with, not what anyone else tells you to do. If you've got friends or family who've had babies, it can help to talk to them about what they chose and why and whether they were happy with their treatment. Ignore people who tell you that birth is always painful, dangerous and/or traumatic. Don't let people scare you - your pregnancy and birth will be likely be different to theirs in so many ways. It is a really special, unique time for you (and your partner if 'applicable' ).
Types of care:
Private - OB (you'll need a referral)
Private midwife (particularly if you'd like a homebirth)
Public: Hospitals have different care available. Mine had a midwife 'team' (that's the option I went with), a midwife clinic (the same midwife for every visit, but a different one for the actual birth) or for high-risk categories the resident OBGyn (you won't get to choose who they are, they will be assigned to you if you need them)
Shared care: Where you see your GP as well as the midwives at the hospital (I don't know if all hospitals offer this? But I think most public ones will.)
You might also want to think about having a doula, a professional birth attendant. They will be additional support for you through your pg and the birth.
This is pretty much the first big decision you will have to make. Take your time, and make sure you're happy with your choice. Don't think that you can't change your mind either - nothing is set in stone, and you are in charge of your own pregnancy and birth experience.
I wish you all the very best and look forward to seeing you around the forum!!!