If you're going to breastfeed, most experts advise not introducing bottles at all for the first few weeks. It is recommended to give other milk (if needed) via a feeding cup or a syringe which they should have at the hospital. That way you avoid any risk of "nipple confusion", which is a common cause of breastfeeding problems. Basically the sucking action is quite different between a bottle and the breast, and in the early weeks when the baby is learning to breastfeed then it's best for them to concentrate on that alone. Also, your milk supply is likely to be better if all your baby's sucking is done at the breast.
Of course some clever babies can manage both equally well, but many are not so lucky!
Lots of people want to be able to give bottles now and again, but if you introduce them too early (and too many), you increase the likelihood that your breastfeeding relationship will last days/weeks rather than the weeks/months you were envisaging. 4 to 6 weeks is supposed to time when breastfeeding is regarded as well established and you can introduce a bottle without risking nipple confusion. You will be surprised at just how fast 4 weeks can pass when you are looking after a newborn baby 24/7!!!
You don't sound very confident about your potential ability to breastfeed. Maybe you have had friends who were not able to breastfeed successfully. Perhaps they didn't get the right support, information or help, or tried to cope by themselves without seeking help. Rest assured that if you have the right support, information and help, there are very few women who can't breastfeed successfully. I have found La Leche League (
www.LLLHK.org) very helpful to me personally - they give advice for free on the phone and at their meetings. There are also individuals such as at Annerley Midwives who do home visits for a fee.