Hi- Here is the site to check out to easily buy bitcoin
https://www.coinbase.com/join/54820dc00a29daebad00000e Coinbase one of the oldest sites to buy bitcoin..... after you sign up on their sister site GDAX it will automatically log you on https://www.gdax.com/trade/BTC-USD or you use same login info..... on the GDAX site if you set a limit order you do not pay a commission.
Here is a great site for research-
https://coinmarketcap.com/all/views/all/ This site you can look up info on each coin or token.
If you are interested in Ethereum get this wallet https://www.myetherwallet.com/
Binance is a great site to buy other coins not on coinbase https://www.binance.com/?ref=10752758 you dont have to give very much id to start trading.
A great wallet to stor lots of different Crypto can be found here- https://www.exodus.io/ you can store a number of different currencies on this wallet and sending/receiving are free of charge except for miner fees.
On this site you can mine Bitcoin, Litecoin, Dash or Zcash for a 1 time fee once a year..... you can start with just a few dollars if you want. I put a few hundred into each. https://hashflare.io/r/CDEBE4C5 It is called Hashflare.
This site is an educational site that gives you free coins everyday just for signing up with it. No cost to collect coins..... It is called Qionpro https://qoinpro.com/31c173d12a311a0ae2eb578f988795bd
Other good exchange sites are Cryptopia https://www.cryptopia.co.nz/Register?referrer=papascrubs and Bittrex https://bittrex.com/Home/Markets
Some of the coins I like are
NEO NEO
XVG Verge
LTC LiteCoin
ZEN Zen Cash
BITB Bean Cash
ADA Cardano
ETH Ethereum
BCC/BCH Bitcoin Cash
XLM Stellar Lumens
Steem
Please do your own research though.... I am not an investment adviser.
Best.
Wendy