Kraken and Binance both offer a whole range of cryptocurrencies with which you can trade. Binance in particular is a large, highly reliable exchange in the market. As an indication, the total volume of all crypto exchanges is around 22 September 2018 at around $ 23,361,200,235 per 24 hours, of which $ 2,398,774,930 goes through Binance. That means that just under 10% of the entire market trades via the exchange. The site r/EtherMining https://www.reddit.com/r/EtherMining guides you in these matters. Is buying cryptocurrencies still not completely clear to you? Maybe the Bitcoin buying guide from Bestebank.org can help you further. Of course you can always ask your questions below so that the experts can help. Buying is not difficult but simply requires a few steps to be followed. From the site r/EtherMining https://www.reddit.com/r/EtherMining you will get all the supports and suggestions regarding all these. The options are open for you perfectly.