Not a basic question at all!
Lucky for us plants adapt to most scenarios as far as weather is concerned.
They tend to rest in the heat rather than in the frost in a zone 10. Once it is too hot they will go dormant and come back to life once the temps cool. I live in a zone 8/9 with very temperate weather. I have a far longer growing season than you would have had in zone 3. Many plants that would be deciduous for you are evergreen for me. I still have to prune them back but I can do this in March/April whereas in Zone 3 you would have had to wait a lot longer and protect them a lot earlier.
Once you are in your new home it will make sense and you can always question your neighbours on what plants do well in such a mild and summer hot climate. Some plants you will have to forget as they will not be able to cope with the heat or might need frost to break bud but other plants will happily grow for you. Some very beautiful ones like Brugmansias aka Datura.
Hope that makes sense.
Check this link for hardiness zones and plant lists.
https://www.usna.usda.gov/Hardzone/hrdzon4.html#10
And this one for information on other things to consider when planting besides the increase in temperature.
https://www.ahs.org/publications/heat_zone_map.htm
