2018 may be the Chinese year of the Dog but in crypto it is the year of the Alts. That's where the MASSIVE profit potential is. Maybe some of the majors will go up another 100% or even more, but Alts can go up 1000s of %. For example, thanks to Haejin, I got into Verge XVG when it was 63 satoshis and it is now over 1000 sats.
You can find where these coins are trading for each currency on coinmarketcap.com under the Markets tab. I recommend https://crypto-bridge.org as the best up and coming decentralized exchange which is focused on Alt coins. The platform runs on the Bitshares DEX and the community is very supportive and helpful. You can also stake BCO and earn a share of the trading fees that the exchange charges.