There is only a few differences between game online vs. real life golf
No cart rental
Can't feel the grass
It is quicker to ball
Green Fees are real cheap
The one thing that is a like - practice you get better. On here it does help to know when you are looking at that 23 footer with 4 inches of down hill, you know you need to hit it X amount to go 18 to 19 feet. Knowing what percent of power to use to get ball to roll X amount of feet downhill is the key. That is where a club chart helps out so much, look at chart to see what percent of power to use to get ball to roll some where close. Then you will get the aim point before you know it you are sticking putts down or up hill 20 feet plus to the cup.
Good luck / keep the head down and just keep whacking it.