New ShadowRunner help, Couple questions about the game. Options

[Volt875]

Hello all, I've only recently been introduced to the game of Shadowrun (by a web comic of all things) and now have the book. I have read through it a bit and there are just some things I can't figure out so if anyone can help it'd be much appreciated.

1:) Do you require a cybernetic implant to mentally interact with things in AR?

2:) (Kinda related to 1 but anyway) With smartgun systems do you have to have some sort of implant or direct connection to fire it remotely? I.E. if you just have smartlink glasses can you fire it remotely, eject clips and the like.

3:) Is it possible to hack a wirelessly done smartgun so as to control it or mess with the trajectory being displayed to the person so they miss.

4:) Can you hack cybernetic arm's and such. If so how is it done, what can you do once inside and what kind of defenses would an average arm have?

5:) As far as vehicles go is it possible to take control of the average joe's car via wireless hacking of the pilot system or does it have to be outfitted with a Rigger Adaptation box thing?

Also just any tips as far as running the world goes or just about Shadowrun in general would be nice.

Also like to note I'm using 4th edition rules currently