The first time i mined I got 17 POS will i get more POS with the same coinage since my balance has increased through minted POS (provided I didn't send any POS out of my wallet)
Yes, PoSToken has compounding interest. The 17 tokens you minted will also generate interest. Remember you have to spend gas whenever you send an instruction to the smart contract. The benefit of minting at the earliest opportunity is counteracted by the cost of gas.