Kicad understand pcb file and some insert and some modify manually costycnc

If open kicad 6 and make new project will see 2 files. One of them have extension .kicad_pcb and i try to make a simple circuit only with this file.Normally is used all caracteristics and instruments for create a big and complete project ... but in this example i use his mode only for understand the basic principle and mecanism to create a pcb ... so a type of "hello world" maybe!

click kicad_pcb file and when is open pcb window program put an element ...

1.click library icon

2.click connector 

3.click banana jack

4.click update icon

Now you have a element on the board !

Click right on object and click Propietes ... will open a box with propietes of oject.

Go to the project and click right and open file with an text editor (i use notepad ++)

If put notepad next to propietes you can see some variables that can modify directly from notepad same as pcb window ...

Footprint is a any object that you load from library ... now will make a magic experiment ... first duplicate the object... you can make with right click and click duplicate ... but same you can duplicate all footprint text...

You can change footprint from Kicad library menu ... but also you can copy text footprint from a footprint file ...

So i open a footprint file with kicad_mod extension ( in right window) and select and paste il left window upper footprint that already exists ... and save and ...

And now the magic is realize ... the new component appear ... without use kicad menu !!!!

now add another component in same mode ... copy from file and paste in pcb file ...

Any footprint need to have also a 3d model that can be add i many modes ...

this pcb not have 3d models 

 but again prefer show you a magic way ... inserting the path of the 3d model file with wrl extension ... so i have a wrl file and insert path adress in pcb file directly...

And this is a magic result ... i add a 3d only for example ... you can add any 3d that have ...

and after you can draw some tracks 

If you can add connections from use with autorute ... select the pin ... propietes ... add give a name connection ... and after click another pin and select the name of first pin ... 

in this mode the both pin will be connect with a line that can be use with autoroute

Finally i dont know that you can create pcb circuit in this mode but im shure that you workbetter after knowing the underground principle of kicad and pcb files...