Ha! I understood username[4] and username[0] and was so excited, then I got a bit lost :-) I just decided to start learning to program and I see I have a lot more to learn.
Well. Journey of a thousand miles and all of that. Just started today actually. Made it through a bit of python. Been thinking about it for a while and had all kinds of excuses (age, time, etc.). Also have had paralysis of analysis and worried about planning the perfect learning curriculum....blah blah blah. Just decided to start with python and go from there. Hope to be running my own node sometime this year :-) Maybe by years end I'll come back and re-read this :-)
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