Need help!With making car mod

Hello.....
Can someone help me with making car mod ???
I have 0 experience but I really want to make it.....I've read all of the vehicle creation in Wiki but still confused about it
I always hope someone will make a tutorial video about it....again 0 experience :-( I know someone can help me
P.S. I have a bad English grammar

Thank you
--- Post updated ---
This are the kind of a mod that I like to make ! making a convertible pickup, 6x6 pigeon ,covet Ute ,6*6 van......all I have to do are take the model from game and do a bunch of things ...... I think it's a easier way to make a car mod!! if you know how......old teach me or make a tutorial video ......

Example (sbr4 spyder )

 

You got this.

 

Dont give up, when i first started i had no idea how to mod either. it took me a very long time to do things properly but i kept reading and trying and now i can make complete jbeam from scratch
Its hard but its really worth it in the end.
But just a warning. suspension is a nightmare. so the 6x6 isnt going to be easy, trust me. i dont even know if i could do it myself.

 

This are the kind of a mod that I like to make ! making a convertible pickup, 6x6 pigeon ,covet Ute ,6*6 van......all I have to do are take the model from game and do a bunch of things ...... I think it's a easier way to make a car mod!! if you know how......old teach me

Example (sbr4 spyder )

how about convertible van or sunburst fastback....is it easier than 6x6 van??
and I always keep reading reading and reading.....but sometimes I don't understand cus of my bad english