I'm new to PDD and i can't find any good tutorial's the ones in help are not good at all and I can't figurer out a lot of things like how do I use the slider no buttons are working or how do I install mods without getting errors?? Can some one link me to a good tutorial page or something please??

Sadly there is no helpful tutorial for now. It hard to understand for me at first and hope my answer will help you.

To install a new mod, I will make an example with this one:
- Download ACSkinFT here projectdxxx.me/script/index/id/7b965cb056746879b0cf84ad7295923c
- Move it to "KHC/PPD/mod"
- Open PPD.exe then in song select press square and choose Mod.
- Checklist ACSkinFT, see the gameplay and enjoy~

Sliders button = Left and Right trigger.
Just make sure you set the key patterns like this to get easier gameplay:
Lslider - triangle - square - cross - circle - Rslider
You can see my video for example.

Just ask again if you need help, I believe you will get used with PPD ;)