Please read the two articles @Essjay posted in post # 12, here is the link:
These will answer your latest questions.
Cycle Your Tank! A Complete Guide For Beginners
Fishless cycling https://www.fishforums.net/threads/cycling-your-new-fresh-water-tank-read-this-first.421488/ Silent or plant cycling https://www.fishforums.net/threads/planted-silent-cycling.470400/ Fish-in cycling...
www.fishforums.net
These will answer your latest questions.