pfd

Newly minted sport pilot here. Wanting to learn more. Couple of things: 1. Be more facile with Garmin PFD Looking for a cheaper/easier way to learn the more nuanced ins/outs of the Garmin PFD than while actually flying. Changing the GPS flight plan midflight is difficult for me. I build my...

Is it worthwhile putting in a used g500 mfd/pfd. i would buy a g3x but it isnt available until late in the year and i have appointment now for a 750 i ordered in february. i just wanted to get feedback on getting a used g500 instead of going with 2 g5s instead? thanks