Coinbase is the easy place to start buy Bitcoin and other assets. Supports all the main Coins.
Bitcoin Litecoin Ethereum
XRP XLM Candano
Polkadot BAT OX Monero Dai
Chainlink Theta
Buy and sell crypto currency easily. This is a very visual format ideal for new users. I have been a member since September 2018 and found it great way to start.
When you ready to buy and sell for real! Binance offers everything you will need. Probably not the place to start But its one of the worlds leading Exchanges.
Binance- crypto currency exchanges
I use RSI + backlight overbought / oversold