Simply put, Resolutions are what Congress does.
Some resolutions are to enact new legislation. Some resolutions are to assign reps to internal committees. Some resolutions are purely symbolic. Some are done as harmless gifts to constituents.
The resolution to "Condemn 3 of President Trump's Tweets" that you describe falls into the "Purely Symbolic" category. It is simply the House making an official statement that they don't like what Trump said. And nothing more.
To give an idea of how Resolutions are used in the House, here are the 10 most recently introduced (not accepted, debated or voted on, just introduced) resolutions at this time:
- H.Res 538 Recognizing the historical, cultural, and religious significance of Sikh Americans, and for other purposes.
- H. Res 537 Expressing the sense of the House of Representatives regarding United States policy recognizing the Assyrian Genocide.
- H. Res 536 Strongly condemning the violent actions of Antifa and recognizing that it engages in domestic terrorism.
- H. Res 535 Recognizing August 6, National Night Out, the national coming together of Americans all over the Nation to unite and promote public safety.
- H. Res 534 Recognizing the 60th anniversary of the U.S. Open of Surfing.
- H. Res 533 Recognizing the accomplishments of professional surfer and surfwear executive Danny Kwock
- H. Res 532 Proposing a strategy to make Medicare available to all Americans.
- H. Res 531 Expressing concern over the prevalence of hazardous working conditions for children, especially the worst forms of child labor in the mining of cobalt and other minerals in the Democratic Republic of the Congo.
- H. Res 530 Expressing the sense of the House of Representatives that the amount of the Members' Representational Allowance should be increased in response to increasing threats against Members of the House.
- H. Res 529 Honoring the life of Petty Officer Raul Guerra of Montebello, California, who perished on October 8, 1967, during military operations off northern Vietnam, and the work of the Bring Raul Home Committee to have Petty Officer Raul Guerra's remains laid to rest in California.