so regarding your question, i will answer them 1 by 1:
1- wich version of python dont really matyter as long that you are a beginner and you are not using any library, as that said i highly suggest that you download python 3.9 (dosent matter wich one wether 3.9.1 or 3.9.0) here is the download link for it :
https://www.python.org/downloads/
Try checking out a video about how to setup python properly and how to avoid errors( for example dont forget to check the checkbox when add to path appears)
2- when it comes to beginner freidly platforms i highly suggest you to use vs code (Visual Studio code ) here is the download link to it : https://code.visualstudio.com/download
Hopefully this helped you and good luck with your coding :)
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