New to the POS system... so if I have coins in my desktop wallet that haven't matured yet, do I need to keep my wallet running? I'm assuming in order to stake I only need to keep my wallet running once the coins have actually aged... is that right?
Coin PoS age: Min. 3 days / Max. 9 days / coins stop aging at 15 days
Yep, just keep them in your wallet for at least 3 days to mature, then they will start to Stake. You don't have to have your wallet open 24/7 to Stake; just open it and Stake every now and then.
If you send any coins out/in to the wallet, then those coins will have to mature again for 3 days once back in the wallet.