Most bus services are provided by FirstBus. There are two journey tickets, all day tickets and weekly passes available. All of these tickets can save you money compared to buying single tickets on the bus. You can get more information on the FirstBus website.
The Underground in Glasgow covers much of the centre of the city on both sides of the river. Like the buses, you can buy tickets which are valid for more than one journey, which will save you money. You can get more information on the SPT website.
Train services in Greater Glasgow are provided by ScotRail. You can get more information on the ScotRail website.