hey man dont worry about it. why dont you open up the first two, click edit and then use the option at the top to delete the two prior unneccessary ones
IMO pushups can be beneficial in strength gains early on, but as one progresses doing countless reps of pushups really isnt an effective means to gain mass or strength.
honestly if you can bench the bar for a set of 10 I wouldnt even bother with pushups. however i also know sometimes when one goes into a gym its nicer if you can do a little weight too...i remember being a freshman in HS and my first time in a weight room was when some of the varsity football players were finshing up (im not sure i even stayed the absolute first time).
If standard pushups get easy try wide o r more narrow widths for your hands, or prop your feet up and your hands up a couple inches so you can go deeper. just watch out for soem this can be tough on the shoulders.
eventually youre going to want to use real free weights in a real gym if you want to make more than a coupel weeks or a month or twos worth of progress.
i would start with pushup workouts say, 2x a week, maybe one day low reps w/ a difficult movement and the other higher w/ a easier one.
but definately start looking into a real weght room, or your gains are going to stagnate real fast
