Aside from Bitcoin, Ethereum (ETH), Ripple (XRP), Litecoin (LTC) and Verge (XVG) are good cryptocoins to invest in.
On a lesser known scale, Reddcoin, Dogecoin, Campus coin and Digibyte are some good altcoins to invest in long term. Reason being that presently these coins are very cheap (under $0.10) but have huge growth potential.
Also, some coins like the CampusCoin project, through the power of the blockchain, aims to simplify campus transactions while educating the community about digital currency. So by investing in this altcoin you can help contribute towards students.