Finally getting back into Forza and looking for guide suggestions

Okay so I just bought Horizon 4 which is my first forza since Forza motorsport 3, needless to say my tunning ability is a bit rusty and my paint skills are even worse. I was wondering if anyone had any good guides, text or video, that i could reference to help me get back up to speed on either. As far as the paint skills go the main thing im struggling to pull off at this point is any custom body work like custom side or hood vents so if anyone has any type of guide for that kinda stuff it would be great.

https://forums.forza.net/turn10_postst133507_-Guide--Creating-Accurate-Logos.aspx
Use that guide and replace logos with pictures of hood vents etc. If you can that is.

https://forums.forza.net/turn10_topics113_Paint-Booth.aspx

https://forums.forza.net/turn10_topics119_Tuner-s-Garage.aspx

Plenty of info if you ask around on those forums, and put some legwork in.

I have made a sort of Guide, plus there are masks in the paint editor now so that you can have metallic colours…

https://forums.forza.net/turn10_postst152121_W-I-P--The-King-Is-Coming----Guide.aspx