Just about everyone starts with no training.
Basics would include things like
Seperated - footwork, jab, cross, hook, front kick, round kick, catching punches, covering up, checking kicks, Shooting, Sprawling, etc.
Clinch - Digging for underhooks, controlling the head, arm drags, duck unders, body locks, shucking, controling the hips, backsteps, back arches, etc
Ground - Mount escapes, side mount escapes, getting back to feet, passing guard, sweeps, defending strikes from bottom, submissions, etc.
Weapons (If those are part of the curriculum) - Footwork, targets, parries, crashing to clinch, settip up, protecting and attacking the hands, etc.
"Mixed Martial Arts" is probably not the best term, as it is rather missleading, but it is the one that stuck. You don't need to have experience to start, it's more about how you train then anything else.