Cooma is the town on the way to the Snowy Mountains in New South Wales. It has all the services you expect and need, but it is also a regional centre, and has a fair share of attractions of interest to a visitor passing through, or staying for a while.
Most people drive to Cooma. It is on the Monaro Highway about just under 5 hours drive from Sydney, and just over an hours drive from Canberra. The Monaro highway is a two lane road for most of its length, in good condition. If you are coming from Sydney you don't need to go through Canberra, but you can skirt around it. Cooma is signposted off the Federal Highway.
By bus (all year)
There are direct bus services to Canberra and Bairnsdale stopping at all the towns along the Monaro, including Bombala. There are connections to Sydney and Melbourne at either end. These services are run by the NSW Countrylink  and the Victorian Vline  The services south run three times a week, and the services north run daily.
By bus (seasonal)
During the snow season (June to October inclusive), several bus companies travel between Canberra and Jindabyne passing through Cooma, sometimes up to 4 or 5 times daily.
Timetables and fares can be found on each bus companies' website, but are only listed within the snow months.
Cooma has a nice sealed airstrip and terminal at the Snowy Mountain Airport, just south of town, but there are no scheduled commercial services. Closest airport with regular service is at Canberra which is just over an hour's drive, and you can fly from there to all Australian capitals. There are bus connections to Cooma.
Taxis are available on the national number, 131 008.
Cooma Coaches  operates a town bus service, which runs a loop around Cooma three times daily. Once around 9AM, again around lunchtime, and again in the early afternoon.
There are large Coles & Woolworths supermarkets, and if you are heading south, Cooma is a great place to get supplies. There is also a choice of 24-hour service stations.
Renting equipment in Cooma is cheaper than at the snow, and it can be of better quality. It is also a cheaper place to rent snow chains if you are going into the national park during winter. There is also a full range of ski equipment and clothing for sale from multiple shops. Some are open 24-hours during Winter.
There are a few cafes and places in town that cater to traffic to and from the snow. McDonalds features prominently in town, as does KFC and a few pizza places. Cooma is really the last serious place to eat on the road from the Snowy Mountains heading north until you get to the outskirts of Canberra. If you are heading towards the snow, expect to pay much more and wait much longer for your pizza in Jindabyne than you would here.