Hagrid took them to get some ice cream in Diagon alley after getting their wands.
"Where did my scar come from," asked Harry.
"That scar that is on your forehead is from a powerful curse, the killing curse. You are the only one who has lived such a terrible thing. He gave you that scar. You and your family are famous for this. There isn't a child who didn't grow up to know your name after the downfall of you know who," explained Hagrid.
Hagrid rented two rooms at the Leaky Cauldron in London the night before the train came so they had a place to stay till then. The next morning they woke up to the sun lit city. It must have rained since the ground was wet. They walked to the kings cross station a couple of blocks down. Hagrid gave them tickets for the platform 9 ¾ said the train will leave the station at eleven a.m.
When they turned to look for it they heard a wisp of wind and Hagrid had disappeared. So they walked to platform nine and plump older woman with a group of kids. All of them had bright red hair with freckles on their faces.
"Do you know where platforms 9 ¾ is," asked Harry.
"I am Molly Weasley and these are my kids. If you want to follow us we can help you get on," answered Mrs. Weasley
"Thank you. I am Harry potter and this is my cousin Dudley Dursley, replied Harry.
"They are Ron, Ginny, Fred, George, and Percy. Ron is going to be starting also, added Mrs. Weasley.
So they walked onto the platform 9 ¾ to the Hogwarts express which was boarding to go to Hogwarts.