Well how old r u? If ur in high school u the plays will depend on what play book ur coach uses. If ur an offensive linemen u will usually down block, cut block ,slide right, slide left etc.. Defensive linemen plays r really complicated but basically u will be shooting the gaps: ( A gap , B gap , D gap etc) just stay after practice and talk to your coach a little. But u are not going to get good answers cuz every team runs different plays. On defense we ran a 4-3 and sometimes a 3-4 formation with a QB spy and a Fire mike and ice Mike. Every team has different plays. Do u even watch football, have u played it before? Cuz if ur old than 10 yrs u should know this stuff
that happen to me too the feeling of throwing up, is cause i was so out of running shape and i drinked to much water so lay low on the water if not u gonna feel like **** during practices if u drink it to much. and as for learning ur position n u should talk to your coach's or a veteran player on the team to show u how to play it.