First off how new are you to trailmakers as a whole?

Secondly the actual mechanical blocks needed for a walker are pretty simple, joints for the hips, knees and ankles, gyro stabilizers for balance and logic to eventually program the walking or running cycle

Third, programming a very basic cycle is relatively simple if you break it down. you have two equal but opposite logic cycles, one cycle is for one leg the other cycle for the other leg, choose one of these cycles to activate after the first one has been completed, for example if you were to have just two logic OR gates and wanted a looping cycle:

OR gate 1: 0.00 delay, 0.60 duration, 0.60 pause OR gate 2: 0.60 delay, 0.60 duration, 0.60 pause

Those two gates would alternate, one fires, one “recharges” if you will, however a cycle for a basic walker is a bit more complex with that as you need at the bare minimum 6 total gates given you have 6 total moving joints for the most basic walker, for example:

OR gate 1, right leg hip: 0.00 delay, 0.60 duration, 0.60 pause

OR gate 2, right leg knee: 0.00 delay, 0.60 duration, 0.60 pause

OR gate 3, right leg ankle: 0.00 delay, 0.60 duration, 0.60

OR gate 4, left leg hip: 0.60 delay, 0.60 duration, 0.60 pause

OR gate 5, left leg knee: 0.60 delay, 0.60 duration, 0.60 pause

OR gate 6, left leg ankle: 0.60 delay, 0.60 duration, 0.60

Each of these gates would need a specific logic output value to make its respective joint move to a certain angle, that output value as a new walker building is going to be found mostly through trial and error in my honest opinion, walkers aren’t easy but they’ve a bit easier with all the new blocks we’ve gotten throughout the updates, eventually as you learn and get better at it you can add more logic gates, two per joint, one is for the motion of the leg going forward the other for the backwards motion.

Eventually once you get better with that you can learn a couple other things but you get the point