We mostly use bulls due to having many far off pastures that we rent. But, I have been doing some AI for over 30 years. It is getting expensive to maintain a tank, but it sure gives you choices on what to use. I breed on natural heats and average60% on first service, but I only do about 10-15 a year if that. I will breed twice then they go with a bull. I did relief breeding for Select for 15 years so our tech could have a day off now and then. Mostly all dairy farms, but alot of small places where they have a couple cows, sometimes a family cow to milk etc.
It is as much catching the cow in heat at the right time as anything. Take the course. But maybe if there is any other beef farm around that is doing it, they might want to go in with you or they might be breeding their own and can come do yours as an "independent do a favor" type thing. Some people just have a better feel for it than others, but practice is what really helps.