1. Buy some btc, via sites like Coinbase[1], Gemini[2], etc depending on your country
2. Send over the BTC to exchanges like Binance[3] and Bitfinex[4]
3. Pick your trading pair(BTC/ETH, BTC/SC, BTC/COSS, etc etc)
4. Trade
Now the actual hard part is how to be a good trader. How do you learn the basics? Read. Hit up Google. There are lots of good free information out there.
[1] https://coinbase.com/
[2] https://gemini.com/
[3] https://binance.com/
[4] https://bitfinex.com/
No. That's not what he needs. OP you need to learn technical analysis. https://www.investopedia.com/terms/t/technicalanalysis.asp
learning technical analysis is good and it will be useful down the line and in case he wanted to trade other things such as stocks too. but it won't work in cryptocurrencies most of all in altcoins because of the manipulations.
so it is best not to put so much effort into it!
Then it is best not to trade at all. I have been using TA for cryptos and it works, not an easy task but it definitely works. Every market is manipulated, saying cryptos are too is not saying much plus people really like to exaggerate on that.