beginner simple question

Hi,

I am an old programmer (65) and I want to learn how to work with STM32. I live within 10km from ST plants in Crolles (France).Target is to be able to drive signals on a 7' railway layout

English is not my natural language.

For my first step, I bought a STM32F750 Discovery kit. I put in the usb cable and ... it works. I can use the demo apps.

My first question is : can I build a new small program and send it to the board WITHOUT destroying the default apps ?

Second question : when I installed Keil compiler, there was a 'pack installer' window. I could'nt find STM32F750 Discovery kit in it. Can I find it somewhere or do I have to use a 'similar' kit ?

Thanks in advance

Jean

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