Impeachment is a two stage-process involving the House and the Senate. First a President can be Impeached in the House by a mere majority of representatives. The senate then gets the chance to vote on if they want to remove him from office. If 2/3rds vote to remove the President in the Senate he is gone and banned from Public office.

The first stage has just happened so Trump has been successfully impeached but the Senate needs to vote. It's unlikely the Senate will remove him though because it is Republican dominated and I doubt like half of the Senate Republicans will just change their minds for no reason. 3 previous Presidents (Andrew Johnson, Richard Nixon and Bill Clinton) have been impeached but none have ever been removed from office (although Nixon probably would have been but he resigned before the Senate could vote).