That is the same info as is in the link I mentioned. I'm aware that styles and mods will no longer work, but actually it is a long time coming that I clean up the years of mods and changes and start fresh, although hopefully my database won't give any problems when I move from 3.0 to 3.2.
I also still have php 5.3 installed because otherwise my current forum version will act up. So I'll have to upgrade that too. I understand php 7 is the latest version, but would it be okay if I update the php to version 5.6 instead? My website is a wordpress website and I'm not sure if all plugins work under php7 yet.