@Crusty as @primek has suggested click on the link and order the My Journey Kit - it has a wealth of information, some of it will relate straight away and some of it is for as time goes on and you settle into diagnosis and treatment plan. My advice is keep away from Dr Google as it will do your head in. Use this site to your advantage, both the website and forum will give you oodles of information. Here's one of many links of useful info on the BCNA website
https://www.bcna.org.au/understanding-breast-cancer/talking-to-family-and-friends/Take care