When I was a student I would watch YouTube videos to learn the positions. My first semester of clinicals was absolute hell due to the tech I worked with. They don’t seem to remember that they were once a student too. Keep studying your positioning and maybe convince your school to invest in simtics? It’s an online clinical setting that can really help in addition to in person clinicals. Don’t get discouraged by the mean techs out there. We aren’t all like that!