@vobootha_kylie
Welcome to the community forums.
This community forum is a very good platform to ask the questions and try to help others.
You can also start diving into the http://devdocs.magento.com/
You can get an idea about the already reported/existing issue from Github: https://github.com/magento/magento2/issues
Also, you should read this post: https://community.magento.com/t5/Welcome-to-the-Magento-Community/Start-here-and-hello-from-me/m-p/5... (in particular the guidelines)
If you're new to our forums, welcome! Take a look around, introduce yourself, check out our guidelines, and be sure to reach out to me or any of our awesome moderators if you have any questions.
You can ask also question to Magento Community Manager @sherrie if you have still issue.
You can always share your thoughts on this platform and yes definitely you can get help from existing community members as well
For your question: you can check PHP version and other technology stacks required for Magento 2.3, Please follow below shared link:
https://devdocs.magento.com/guides/v2.3/architecture/tech-stack.html
Looking forward to your contribution to this forum.
Manish Mittal
https://www.manishmittal.com/