Yes,they told Hermione and some others I think, but I'm 100% sure that they told Hermione because in the 6th book/movie, they were invited to Aragog's funeral, even though only Harry went.So, they at least told Hermione Granger.
Harry and Ron met Aragog in the Forbidden Forest after following the spiders to him. This happened after Hermione was attacked and Hagrid was arrested on the 24th May 1993.
Harry and Ron are told to follow the spiders by Hagrid, the Keeper of Keys and Grounds at Hogwarts School of Witchcraft and Wizardry, because Tom Riddle framed Hagrid for opening the Chamber of Secrets. Hagrid's pet spider, Aragog, is thought of to be the beast hidden in the chamber; however, when Harry and Ron follow the spiders (like Hagrid told them to) into the Forbidden Forest, find Aragog, and discuss the matter, they find out that Aragog was not the beast. this then proved to Harry and Ron that Hagrid was innocent. This also later on contributes to the comprehension that Tom Riddle was lying about Hagrid opening the Chamber of Secrets 50 years previously.
Because Harry is his best friend!!! Anyone would do the same.
Not exactly. Harry kissed Ginny in the common room, in front of most of Gryffindor house - Ron included.
Harry and Ron got Hermione to check over their homework. That way if it was incorrect, she'd tell them what the right answer was.
Yes, he did in the movie, but not in the book.
That Harry & Ron were sneaking out to the Trophy Room after hours to duel Malfoy.
Ron and Harry found out from Aragog, then Hermione found out at the library at the same time. She wrote on a piece of paper that she basilisk is moving though the pipes and she kept in her hand when she was petrified by the basilisk. Later Harry and Ron found the piece of paper and figured out the "pipes" clue. Then they found out the Chamber of Secrets and the basilisk itself.
Harry, Hermoine, Ron
Harry never tell this to any of them, just his son, in the Deathly Hallows's epilogue.
No, Ron doesn't kill Harry.
No. Ron is in Gryffindor with Harry.