Learn the basic terminologies, first. Call options = betting up. Put options = betting down.
Second, it's easier to explain, and self-learn, if you kind of just tinker around the Options section/ordering and graphs and chains area of your brokerage account.
Third, you mentioned you want to day trade options...that's basically the same as day trading stock, which you're a veteran of.
Round trips...what's that? Sounds like airplane, airport, terminology. You Open a position, and Close a position with options.
It's all very easy to learn, don't get confused or intimidated.
Options are generally, traditionally, used as Insurance...to protect/hedge a portfolio from major, unexpected, swings.
But, modern day, traders...basically use options to trade them for nice gains like being in a casino.
Proceed with Caution, though, gains can easy come...and easy go, in the wrong, amateur, hands.
If you are not good at trading the stock, don't trade options. Options will only greatly amplify the erraticness of your account.
If you know how to guess and trade the future correctly...options can be your best friend and coolest thing ever.
If you don't know how to guess and trade the future correctly...options can be your worst enemy.