Hello.
Well this is my first post on this forum so a "thank you for the great work you are doing" is needed, as well as the congratulations for being so clear while explaining, it's almost a unique and precious quality you have.
Given that... i followed this course even if i'm not a complete newbie (i played for a couple of months a year ago and after that i stopped due to lack of time) and everything was okay. The part about anchoring fingers was clear too, but i used to do it another way i figured out by myself at the time when i started playing the same 3 exact chords. What i did is still to anchor the first finger but in a way that would have made me easier to pass from A to E. I played the A with 2nd 3rd 4th fingers in the second fret of the 3 playing strings AND the first one on the first fret, right on the back of the third one.
This seemed pretty useless but had 2 big advantages at the time
1) i could pass from A to E in an extremely easy way (actually easier than your way, for me)
2) i could have more space to let my fingers breath on the second fret. Yes i am one of the fat-fingered guys who have problems in keeping the 3 biggest fingers on the same fret: it's still doable but gives some problems.
Can i keep doing this way or is it something that later can turn out to be a prolem? (i can't even imagine how, but who knows?

)
Thanks for the answer
Stefano.
p.s.: Oh yes and, by the way, English is not my native language, so if i made some mistakes or if you see some slip of the finger or what please feel free to ask what i wanted to say or to correct me so that i can improve

ty.