How to make a rails that you can grind on?

I understand that no one's gonna answer this question properly and it's gonna get take down for this sentence for "impoliteness" and/or for "request" (That's how things work here, considering this one question from 3 years ago i found https://scriptinghelpers.org/questions/57141/i-bet-none-of-you-can-make-this-grind-rail-script-work-smoothly), but maybe you can help me to create a part If a player jumps on it, the player will stand in a certain animation and begin to roll (Or climb) along the rail, depending on the speed at which the player jumped on the rail, as well as on the slope of the rail itself (If the player lacks speed, he will turn in the other direction and will roll down the rail), If you played Jet Set Ra... sonic the hedgehog you'll understand what i mean. Just give me some hints, maybe video lessons of stuff i would need for this, please.

"Show us what you know." Alright, for example i can do THIS

print ("Hello world!")

See? THIS awesome thing will show a message "Hello world!" in an output! Fantastic, Isn't it?

Also I can show the gui on screen for a few seconds, teleport enemies from replicatedstorage and give enemies a death sound (Thanks to some AWESOME guys from this site)