u/Maleficent-Land-4236

i want to make a cnc machine not for cutting but for other purpose but it has the same structure as the cutting machine with some changes, i wanted to start in the design, but i dont which program should i use, i dont know much about mechanical designing but i have a little knowledge on 3d modeling, So i will need some tutorials online (free), so what do u guys think is better and easier?