So far as side effects, they seem extremely variable from person to person.
Take someone with you first time, if allowed. Ask if it is possible. COVID started when my Chemo started, and support people weren't allowed, for all of my Chemo. Each State and hospital will have different policies.
Having the things available that have been suggested above, is good advice. If you need Nexium, get it on a script, it's cheaper.
You haven't said much about the specific chemo planned. Or much of your life situation.
You may have Income Protection insurance, in your Superannuation, if currently working. This may be helpful. If you are going to take a large amount of time off work.
But hopefully you will have been told which side effects are likely. They can be bad for some people and relatively minor for others, so try to stay optimistic. Mine have all been very manageable.
I had 4 fortnightly EC (Epirubicin+ Cyclophosphamide), then 12 weekly Paclitaxel. Just finished and feeling tired, but I am OK. I start radiotherapy in a week for 5 weeks.
Have you considered the cold cap, to possibly save your hair? You would need to start it on your first treatment, or it's too late to start. There are other posts re cold cap for more information.
You could buy a wig in advance.
You could cook some easy meals that freeze well, in advance. For days you don't feel up to cooking.
I always took a book to chemo. But usually slept most of the time.They have TV there.
Good luck, and I hope that your treatments go as well as possible.
