Residents are invited to learn more about the city’s host community agreement with Mohegan Sun and the company’s proposed casino at a public meeting on Saturday at 11 a.m. in the City Council chambers. Mohegan Sun is seeking a state license to build a $1 billion resort casino on 42 acres in Revere owned by Suffolk Downs. The plan emerged after a previous proposal by Suffolk Downs and Caesars Entertainment for a casino in Revere and East Boston was rejected by East Boston voters last November; Revere voters endorsed the same plan. Under the host agreement that was signed Dec. 23, Mohegan Sun would pay Revere $33 million up front, and minimum annual payments from $25 million to $30 million. Saturday’s meeting is the second that is being held as part of an outreach effort that Mayor Dan Rizzo has launched to educate voters about the agreement and the proposal and enable them to ask questions. City voters will take up the casino plan in a referendum Feb. 25.