The Copenhagen Visitor Service offers authorised points for information about Copenhagen across the city, so you should easily be able to learn about whatever attraction you want to visit. Copenhagen offers a world of experiences, all of which are easily accessible by public transport via train, metro or bus, but there's a way to save money on all of it.
If you're spending an entire holiday here, grab a Copenhagen Card and get free access to 87 different attractions across the city as well as free public transport. The city makes disability access a priority, so you'll find that people in need of special accommodation will have little trouble here. The locals are friendly and love visitors, so just stop up to a booth and ask.