In general rabbits do like company, however bonding two rabbits can be tricky, you must ensure they have compatible personalities (see below), two rabbits that fight straight away are unlikely to get along. The bonding process is easier if both rabbits are neutered however it is possible to bond same sex pairs (pairs of bucks are very tricky to bond). Neutered buck & doe pairings work best, followed by doe & doe pairings. It is also possible to bond rabbits into a larger colony type group, these usually work well as long as there are more does than bucks in the group.
This table show the three catagories of dominance and the 'typical' behaviour traits of each, its not set in stone and rabbits are all individuals, but this has helped me to select pairs and bond without any issues. It is best to pair rabbits as far apart on the grid as possible (i.e. dominant buck and submissive doe or visa versa) top and bottom work well in does, but as long as the rabbits are not on the same level bonding usually works well... it is also possible to bond two rabbits from the submissive catagory (this is the ONLY buck-buck pairing that works)
Start by setting up a small run in a neutral area, put both rabbits in the pen and observe them carefully, if all goes well the rabbits will take to each other instantly and come together, you are looking for body language, you want the rabbits to groom each other as a true sign of acceptance. However watch for hostile signals, ears laying flat and the tail being raised. The rabbits will need to establish their order of dominance, this will include chasing, fur pulling and mounting (regardless of gender) this is all normal behaviour, just keep an eye on the rabbits and watch for the signs of one submitting, allowing itself to be mounted or grooming the other's forehead. If the rabbits seriously attack each other remove them and try again another day, if they continue to get along try them in a hutch together. Ensure the hutch has been completely cleaned out and disinfected so it does not smell of either rabbit. Keep a close eye on the pair for several days after bonding.
If you have selected compatible rabbits there really should be no major issues in the bonding process, the only times i've seen bonding fail if if two dominant rabbits are paired or if an extreemly dominant unneutered animal is used.