Our first programming experience in Minecraft is the ComputerCraft Hour of Code activity. Skip the board game activity at the start.
You will go through six programming tasks to get through and exit a short obstacle course. All of the tasks are completed by your robot turtle, using your turtle remote control to direct and program the turtle to move, mine, and place blocks.
There is a YouTube video to introduce each task. Watch the video, do the task, and repeat until done. I suggest you do not run Minecraft in full-screen mode when doing this, just to make it easier to switch back and forth between YouTube and Minecraft. The speaker in the videos has a bit of an accent: you will need to listen carefully to what he says.
This is a world with numbered lanes or areas for each individual student. Choose the number that matches your assigned computer number.
When done, you can get a Lua Computer for use in Minecraft and start learning about it. Or make a program to mine materials and build a structure using your robot turtle.
The Robot Turtle tips at the bottom of the linked page are useful. Read them to avoid frustration.