Good sight to find out difference between the DVD + and - and R and RW?

Question

Could someone direct me to a good sight for info on DVD-R, DVD-RW, DVD+R, DVD+RW. I need to know what's the difference between them and which would be best for me. Just got a new camcorder and I'm confused as you know what..... I want to be able to record then put it on the computer then onto a DVD and be able to go back and record more onto it without erasing what I've already put onto it. ex...put Christmas on it then put the following Christmas and so on...

Thanks so much!!!

Answer 1

Try Wikipedia

All formats allow you to keep adding material until it is full - at that point you finalize.

-RW or +RW are re-writable.

Check the front tray of the DVD drive on your computer. The Logos will tell you what formats are supported.