Getting Bitcoins to get started:
In order to buy most coins, Bitcoin (BTC) or Ethereum (ETH) is needed first.
CoinBase is where most ppl get started into this space..
U can buy Bitcoin, Litecoin & Ethereum here. Only issue is that there’s a limit to the amount that U can buy per week. I think it starts with only $100, & the limit will increase with time & after U validate ID & account.. If U use my ref link to sign up, both of Us will get some bonus Bitcoin from CoinBase:
https://www.coinbase.com/join/5961cb19d677dc00ae7bd41e
Local Bitcoins has a bigger limit.. I think U can buy up to 100k worth of BTC.
Here U can deal with sellers directly, peer to peer.
https://localbitcoins.com/?ch=j2du
Buying Alt coins with Bitcoins on exchanges:
After U purchase Ur BTCs, or ETH, U can send em to an exchange to purchase other Alt coins.
KuCoin is my current favorite exchange. When U buy & hold KuCoin Shares on the KuCoin Exchange, U get payouts everyday of all the coins listed on this exchange (new coins get added all the time too). Lots of them are quality coins.
Some of the top coins I would recommend on here are OMG (Omisego), NEO, POWR, EOS, ETH, LTC, UTrust, QSP, DragonChain, Po.et etc..
https://www.kucoin.com/#/?r=E2X7aO
Binance is my 2nd favorite exchange.
This is where U can buy TRX (TRON), my favourite coin atm.. Other coins that I recommend on this exchange are: ADA (Cardano), BQX, QTUM, WABI, ICX, NULS..
https://www.binance.com/?ref=10150353