Yahoo finance data is back !!Start using Yahoo finance today and they have built with data for crypto currency as well. This is going to be awesome and you will get excel sheet also from this blog to calculate the profit percentage from excel file. I have another interesting way to use the OHLC data. You can get it from fiverr, you will get the complete guide to use it in your trading routine.
OHLC are simple to get now and make use of it. Crypto-currency are risky but you can make use of stocks. There are technical analysis book available in the market which can help you with finding the trend. Work on investing in crypto currencies and it would be the best decision for another 5 to 6 years.