Hop seeds are available but recommended only for hop breeding purposes. You never want a male plant around if you are growing hops for brewing. Hops will escape to the wild if given the opportunity and can even become invasive, and once males escape you will ruin your chance to ever grow hops for brewing again. Hop plants are easy to grow from rhizomes and even cuttings. Brewer supply houses around here have a late winter/early spring ordering season for hop rhizomes and a person goes and picks them up when they arrive in springtime.
Bear in mind that different hops have been developed for different purposes during brewing so it is likely you will want to grow at least two different hop varieties, chosen based on their function.
I have four hop vines, two are Cascade and the other two the name escapes me at the moment. My plants are vining up my old barn silo. Vines reached 35 feet in 2021, just their second year from rhizomes and cuttings I received in a private plant trade. They are producing far more cones than I could ever use. Cool plants...
Photo showing a few of my Cascade hops.