Welcome to Workshop @donna. It's great to have you join the community. I hope you find plenty of great information, ideas and advice and I'm looking forward to reading about your plans and projects.
A raised vegie garden is a great project. I'm sure there will be many community members keen to assist.
Here's a few posts that should inspire:
The following Bunnings D.I.Y. videos should also be a great help.
What materials were you planning to use for the raised garden bed? Do you have good DIY skills to build something from scratch or would you prefer to buy a simple kit? There are lots of options to explore. And then you get to the fun part of getting the soil ready and planting.
I made 3 garden beds from sleepers I had cut to size (at Bunnings) 2 are 1800mm x 900mm and the middle one is 1800mm x 1200mm.
It is hard to see them here they are nestled in amongst the Agapanthus.
One thing I will say is that they require a lot of soil, I used a mix of bagged compost and potting soil and numerous bags of each!
Great to see that you got such fantastic suggestions from Workshop community members. I trust you found their advice useful. Please let us know how you go with the project.