Cordon training is pretty straightforward, as long as your plants are vigorous enough to send a cane all the way to the first support wire in one growing season. You’ll want something like a 2-wire trellis to support them.
Before they start growing, cut the plant all the way back so there are only two buds on a single cane. You’ll want to start training the stronger of the two canes that grow, with the other as a backup for when the deer eat the one. Train the one up a stake until it’s a bit above the bottom support wire, and cut it off just below the support wire. This will cause the top lateral buds to send out canes, forming the arms. Might not get enough lateral growth until the second year. If it doesn’t make it all the way to the bottom wire, cut it back the next winter and start over, rather than trying to continue the one cane the following year.