Cheap way to learn G-code/CnC?

I would find out what software they use at your place. Then try to get confident with that. Sounds like it may be simpler than Fusion 360.

A good way to use the tutorials is to put a second monitor on your computer next to your usual one. Then play the tutorial on the second screen to be able to start and stop it as you do what it says in the actual software.

G Wizzard is for making tool paths more precise with exact speed and feed data. You draw the part in CAD then use the CAM side to make the tool paths in G-Code and this has the speeds and feeds in it (And this is where G Wizzard comes in to make it better.) I would wait until you had a handle on some CAD/CAM software before going to G Wizard.

The reason G Wizzard can be helpful is because it can speed up the entire operation and be healthier for the tools. Less tool wear, better final finishes. Sometimes with G Wizzard you can buy a different end mill (Maybe cheaper tool too.) that would do the job better. All saves money and helps final part outcome. That is why your company might be interested. Also why the hobby machine shop guys can find the best feeds and speeds at home and have better outcomes.
 
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