Help needed new member 😊

Sara

Hi all I'm new to this I'm just starting out and I'm a bit confused! My chart is below I've only put one cycle in so far my green days start tomorrow do I need to have sex on every green day? Or every other green day for the best chance? And what about the purple days? Can u also explain what all these different acronyms mean to me please?? as I have no idea and it's honestly like everyone is speaking another language lol 😂 thanks so much for your help it's Much

needed and appreciated xx