Help with directions

Hello, is everything alright?

I would like to learn how to use the Canhack. I have a Peugeot, and when I connect the Canhack directly to the car, I can communicate with the Smeg radio. I'm using an Arduino serial connection with an MCP2515 to send the Smeg code to it and connect. But how can I make changes after the connection is established? Do I need any specific software?
Is there, for example, a way for me to connect to the electronic fuel injection system 7.4.9 and activate the stability control using Canhack?

Hello,

Please contact the seller or provider of your hardware.

Best regards, Rainer.

Hello Rainer, how are you?
I haven't purchased any software, so I'm unable to contact a vendor.
I would like to know if there is any free software that allows me to modify parameters using Canhack...
or if there's a user manual or documentation available for the commands I can use with Canhack.
I'm a beginner and I want to learn how to use it more effectively and which commands I can use to make changes to the CAN bus network.

I don't know if you understand what I mean, friend.
Thank you for your help!