Ok, let’s talk

From past few weeks we have seen several posts on the app about how PM are ‘shyt’ they don’t contribute anything and they should know how to code they don’t know technical stuff etc. So, my request to all the Techies here please suggest me how do I show the recruiters/hiring managers/my engg team that I know how to code and understand tech. I seriously want to learn all these stuff but how to show any tangible evidence that I know how stuff works and is built, as my day job I won’t be able to code as I am a PM but let me know what I can do on side one or two hours every day and maybe at the end of six months I am able to show that I have done something that is an evidence that I know tech.