WAX

That's the best, a well polished wax surface, flat leather soled shoes, and lots of leg muscle strength.
It's made to look easy, but it's really asking lot to drag your weight across the floor, especially if you're wearing standard trainers/nike etc which give grip, on a rough concrete surface.
Part of gliding is weight distribution. Get your body weight over your resting leg - the one not gliding, so there's little if any weight on your gliding leg. But don't let people know that

Make it look like there's weight on your gliding leg.
This becomes a real art when you change legs a lot, very difficult to do, but great to watch.
Check out these legendary gliders from the 1940's, Tip Tap Toe in Shout Brother Shout. for some moves.
You'll see the classic melbourne shuffle step too, that twisting of your foot/ankle to move sideways [1:25], and a warning DON'T EVER TRY DOING THE SPLITS without 6 months preparation in stretching exercises

Once you've stretched your leg and groin muscles, ok, but for first timers, sit on the floor and widen your legs a little bit every day for 6 months
Then you can spend another 6 months in a gym to stregthen your legs to squeeze/glide yourself up. hehe this is pro athlete stuff. You'll be pulling hamstrings all over the place other wise.
So build up those thigh muscles folks, that's the secret to gliding.