You can see the graph in your exchanges or for general purpose you can see on coinmarketcap or coingecko.
What i think is Bitcoin this year will going down. The price now is around $7,000. Maybe will going down until $6,000 then going up again next year slowly.
There is many reason behind it, like holiday, politic, etc.
Coinmarketcap is price analaysis site where you can watch every coins past and current history. It also give us the information that which coins where listed. There is many tools which are helps us to learn about crypto.