I agree with Amy's great answer.

There is no "right" way to do it exactly - it's really just a matter of following your little one's lead. Generally with a premmie you would go on the adjusted age, although my DS was born at 36+4 and didn't need SCN so I went on his birth age. But the thing is not so much to introduce the solids on the first day they are 6 months. It is more to see if they seem ready around then, and see what happens if you offer some food from your plate (steamed vegies are a good thing to try first, but it could be something else). If you are in doubt about her readiness then delaying is always better than starting too early.

One other thing to consider is that meat is a very important early food as it is a really good source of both iron and zinc which are essential for brain development. So this would ideally be introduced quite early on in the process. You can give her boiled steak to suck/chew on, safe bones to suck or scrape some meat off and this can then be served with something else.

The ABA Introducing Solids booklets is really helpful source of information - probably the best book I've seen on the topic and it's only $5 from Mothers Direct.