The easiest route is just to copy your tapes to DVD by one of the methods explained above...especially if they are not treasured home movies. You should know that the DVD copy will not be an improvement over the tape as it can't make the source movie better...so you may not be overly thrilled by the result unless you take another route.
You can copy your tape direct to DVD but bear in mind that this is compressed data. If you want to edit and make movies in the future, you'd be better to copy them as AVI files.
There is software to make your job easier. And example is:
http://www.aimersoft.com/product.html
There is excellent editing software from Adobe: Photoshop/Premiere Elements for example.
https://store1.adobe.com/cfusion/st...Elements&store=OLS-US&distributionMethod=FULL
I've taken some of my old movies (8 mm) and had them converted to DVD's and to AVI files. There were so many 'bad' camera shots on them that I just had to convert them to movies with music, sound effects, titles, etc. And what a hoot watching them! Making copies to send to relatives is easy and very inexpensive...and they love a look back to the past.
It's a time consuming hobby...that can turn into a profession...and there's a learning curve. I suggest you try making a movie on Microsoft's MOVIE MAKER that comes with your computer operating system...just use photos at first, then apply transitions, music, etc. on the timeline and you're away to the races. Movie files (best format is AVI) come next and you'll be able to better understand the process. But make your first movie no longer than a minute...because it's easier to adapt as you learn from mistakes.
Here's an example of what you can do to preserve the past. I found a bunch of pictures and old 8mm movies, had them converted professionally to digital AVI files, and I put together this little movie about my dog Peggy who passed in 1992. It was such fun to have the family over and watch Peggy and my daughters grow up with her, even through a move to a new home.
http://vimeo.com/28129113 You can enlarge to play full screen.
Brian