Contact your local semen rep, Genex, ABS, Select Sires.... they always have reps out running around breeding cows.
It is not cheap, but in the end worth it. We have never bought a bull, so how much have we saved over the years? Everything is AI'd or embryos put in here.
School: Runs about $350 to $400 around here, takes a few evenings/days
Supplies: Tanks depend on size, but can run from $250 to ?????. Then the kit (i suggest the kit, it comes with everything you need to get started- gloves, gun, cutter, thermos, tweezers, covers for the gun, and a nice box to put it all in) runs about $250 if I remember correctly. Then your semen supplies, which can run from $20 to hundreds depending on the bull. Most people stay in the $20 to $30 range (per straw). Figure 50% conception, you need to make sure you have enough semen (so breeding 10 cows, you might want 20 straws to be safe).
You need to find out how tanks are filled around you. We have our semen rep fill it for us, and we buy most of our semen from him. There are also places you can take it to get it filled. But that is something you need to know before getting semen.
Another option is to lease a good bull. That way, you have him for 45 to 60 days and your breeding problem is solved.