what is the basic step to Lindy hop for the follower? and leader?

Lindy Hop is eight counts, where the follow steps first on their right foot and follows this rythm:

1 2 3 a4 5 6 7 a8

or

Step, Step
Triple Step
Step, Step
Triple Step

or
Right, Left,
Right, Left, Right
Left, Right
Left, Right, Left

Some instructors will tell you you walk forward, turn on 3,4, walk back to your orginal position . . . BUT, I say you do the steps in place, until the guy leads you. Your feet should go whereever they need to so you don't fall down.

For the Lead, the steps are the same, but on Mirrored feet (i.e, switch L for R, and R for L)

The steps are actually easy, it's the Connection, Frame, and Momentum you have to learn, that's the hard part. Learning to move with your partern, and make it relaxed, and not jerky as you do the steps.