I want to refinish my dining room table. What's the easiest/best way?

you could paint the legs and apron using a chalk paint and wax finish...no sanding required, just prepare it with a good cleaning using a degreaser first. Then you can sand down the top (strip) and restain to restore the wood finish. Or the whole piece could be painted with the chalk paint.

if you're open to painting it, use chalk paint no sanding. Another option is to use gel stain by general finish.

Depending on the look you're going for, chalk paint is a good alternatve. You generally don't have to sand or prime a clean surface. You can thin slightly for a smooth surface OR you can can scuff the edges with sandpaper for a distressed look. Then apply paste ws for sheen and protection.

use a refinishing product that dissolves the existing finish (Amazon) and then reapply the new finish or paint

Here are some ideas to make your table unique and a real conversation starter.

Cover with pennies:

https://www.google.com/search?q=decorating+tables+with+pennies&rlz=1C1BLWB_enUS700US700&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiOiaS8qM_UAhXGyyYKHeHfBjkQ_AUICygC&biw=1024&bih=714

With glass gems:

https://www.google.com/search?q=decorating+tables+with+pennies&rlz=1C1BLWB_enUS700US700&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiOiaS8qM_UAhXGyyYKHeHfBjkQ_AUICygC&biw=1024&bih=714#tbm=isch&q=decorating+tables+with+glass+gems