Proof of Stake is one of the ways to get Altcoins (free). There are basically 2 options:
1.) You can keep your Cryptocoins in a wallet on your PC ... (you need larger amounts to get results), or
2.) You can send them to a some PoS Pool where they multiply ... (even the smallest quantities are enough to achieve results).
Simply Put: Get results faster with PoS Pools, while saving energy, time and other cost.

BTCpop site as an example:

Multi Altcoin PoS Pool with Faucets and built-in Cryptocurrency Exchange.

Btcpop Altcoin Faucets - earn staking Rewards Earn with BTCPop Altcoin Faucets where you can claim Cryptocoins every 30 minutes.
All your claims goes once a day to your main user POS Pool account where you get staking rewards more times a day.
Most of the 101 Altcoins on this Faucet are stakeable, so you buid automatically Passive income.
PINK, 404, 2x2, OPC, BEAN, CLAM, $PAC, ARCO, PIVX, TEK, TRI, RDD, EXCL, TES, IC, LIR, 1337, CRX, ATOM, ALEX, SDC, BUZZ, XP, STRAT, LANA, LDOGE, XGOX, MOIN, SCRT, KUC, PHR, EDRC, EGC, GSY, ESP, EMC, XBC, HYP, HBN, BLK, DMD, NAV, OK, RADS, SLG, ASAFE2, NRO, NKA, PND, NVC, TX, RBY, ABJ, BOAT, ODN, BRO, CBX, NET, PIGGY, PPC, CURE, HOLD, ONION, KB3, MOJO, ZEIT, AERM, INFX, FAIR, ORB, NEVA, RBIES, DEM, GRC, CLOAK, GPU, GB, CPC, CJ, 2GIVE, BIOS, POT, LUNA, GRC, XTO, NLC2, IOC, POSW, RBT, BTCD, BON, BOST, MINT, BAY, SPRTS, ADC, FLT Altcoin Faucets.
(You can claim Coins also without Login, just with your Username).


Which Coin makes sense?

There is little point in claiming all coins. I currently prefer HyperStake (HYP), ExclusiveCoin (EXCL), 2x2, 404, Junson Ming Chan Coin (JMC), ReddCoin (RDD), BeanCash (BEAN), Phore (PHR), Clams (CLAM), PIVX, Blackcoin (BLK) and Stratis (STRAT).
The best thing to do is to look around in the in-house exchange to see how the coins are tradable and at what price. Then look around in the account where you can see how your altcoins are multiplying through PoS. It is a very beautiful sight every day.

PoS Coins APR

(APR) = annual percentage rate.

404 - 404%, 2x2 - 365%, JMC - 62 %, BEAN - 34%