What are some things you can go to hell for?

Read your Bible... The 10 commandments will tell give you that . :)

For Christians, the short is "not remaining faithful to Christ." If you want some specifics...

1 Corinthians 6:9, 10 - Do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived. Neither fornicators, nor idolaters, nor adulterers, nor homosexuals, nor sodomites, nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners will inherit the kingdom of God.

Revelation 21:8 - But the cowardly, unbelieving, abominable, murderers, sexually immoral, sorcerers, idolaters, and all liars shall have their part in the lake which burns with fire and brimstone, which is the second death.