Looking to buy CAD, CAM software

Hey ,
I am james new member int his community,
I want to buy CAD, CAM software. But i haven’t much knowledge about it and also i am confused after getting different options I read an article on which they mention dome free and paid CAD, CAM software .
Now i am confused to buy which one. At present my work is at small level but i am expecting it to grow.
So can you help me figuring out best CAD,CAM software. You can read the article:-

You can also give some option from your experience.

It will be great help for me

What kind of a CNC machine do you have/want to get?