If you want to earn some ETH or BTC for free than yoin @Viberate and explore their rewarding system.
They are giving away 5000VIB tokens daily for participating and promoting them on twitter, Facebook,...

You can earn some good money on daily basis!

Curent VIB price:

$0,534969 USD (21.92%)
0.00003586 BTC (4.22%)
0.00074161 ETH (6.79%)

One I have my eyes on is ITC. It's a token for ITC projects of IoT’s (Internet of Things) operating system. A security token is a plus for me because right now, IOT is very vulnerable to attacks and has a high cost of centralized architecture. They're very thorough with how their tech works and I recommend looking into it: https://iotchain.io/

Today, all alto coins have grown very much. But I think that it is not too late to invest in ripple and WAVE. These are very promising coins and there are a lot of good news about them

If you are going to choose. pick centra and minexcoin.
In minexcoin you will earn 3.58% weekly by just parking your coin.
Centra has now released their card and the value on the market now is 5x compare last week.

Join the Neufund project, their NEU token. The company has just finished ICO and has already entered the stock exchange and made payments to everyone, a very qualitative approach

eth and waves , the both will have a good price, some devlophers ERC20 will pay their dividends, not only that , many dev ico with ethereum success with token erc20 , if calculated dev erc20 until 60 % succes run in roadmaps, and then vitalik buterin talk will to work with waves in project ICO . i think " why vitalik seeing waves . " , waves have a good quality , have dex and smart wallets . i start hold & colection until 10k waves ,  is a loaded to start node waves  . or you can search about Eon project , Exscudo have nice project , Q1 in 2018 Eon Starts to testnet DEX.

ico investment is a promising . some ico have make a people like to small trade with for big profits , but some investor category dnot know about ico roadmaps , and stuck on game players to pump and dumb, created panic selling to take big benefits. I dnot blame these guys, but already too many newbie speak lose money in ico's, I do not really know about what they think

IOTA and NXT.

My choice Eth and Nem.

Those two are already proven to be worth of investment because they're on top of the Altcoins list but when talking about the most progressive and aggressive coins this two will blow the chart: Oyster Pearl and Verge VRG. They are both worth below dollar price but they rise abruptly. For. Example for Oyster Pearl PRL, from $0.016 jumps into $0.40 in a single day.
This kind of progress really impressed me.