Nice

I'm trying to understand the call and put option.
Please correct me if the below is wrong.
Much appreciate for your reply and explanation.
Buy call options = Buyer get the premium immediately? buy at the higher than current price which expecting the price will raise in future?
Sell call options = Seller pay the premium immediately? Why need to sell it if price expect to raise?
Sell put options = Seller get the premium immediately? sell at the lower than current price which expecting the price will drop in future?
Buy call options = Buyer pay the premium immediately? Why buyer choose this?
Which one is able to buy or sell in order to receive the premium?
...

hi