Welcome! Lots of good comments from experienced people.
So here is the picture, new to using a saw, and large log pile. Hmm!
Where do you live? I'm asking because just picking up a chain saw and starting can be very dangerous without someone to demonstrate and give you pointers. First off read the saw manual a couple times. Do not cut with, or near, the tip of the bar. Which means don't stick it in a pile of logs.
Tools: A jig to clamp on the bar for sharpening. You want to keep it sharp. Get used to touching it up ever time, or every other time you cut. Two three strokes. The jig makes it easier to do each tooth the same. It is safer, and just a part of what your getting into.
Chaps: use them.
Boots: wear a high ankle boot, at least with a steel toe. But as pointed out before your foot is not protected... except by your brain! Use it, your brain, by not using your foot within a foot (12") of the bar, and never even close to being in line of the bar.
Hook-a-roon: This is a 32" pole with a 2" barb on the end of it.(photo of part of it) Good chance the log pile is going to be 4' to maybe 8' high. Use the hook-a-roon from the sides of the pile to straighten and roll logs off the pile safely, or should I say more safely.
safety: Pull the logs away from the pile to cut. I prefer a peavy to a cant hook for working a pile as generally there is more prying than using the hook to roll stuff. A peavy has a point, a cant hook has an angled tooth on the tip of it. If tired stop, drink some water, take a few minutes to look things over, keep work area picked up and clear of cuts, pet the dog, whatever. I like to work alone in the work area. No kids, no other person to keep track of where they are, or what they are doing. No one reaching down and picking up wood as your cutting, or pulling logs down while your cutting. You do want someone around the house checking on you from a distance once in a while however. Oh, and get used to using the saws chain brake. If you are cutting a log and finish, then set the brake before stepping or walking with the saw to cut another log. You will quickly find your feet and ankles are constantly turning, twisting catching on nubs and things. Sometime you go to move and your foot catches and you go down instead. Use the brake, remove your finger from the trigger between cuts, even if it is only a step or two. When your done cutting , pull any questionable logs in the pile down so it is safer when your not around.
It is going to take you awhile to cut seven cord. Start slow, and enjoy the learning process. As a side note, you could build a cut table about 30" high. The advantage is cutting at a comfortable height eliminating back strain, and cutting uniform length rounds without measuring, and keeps you chain out of the dirt. The disadvantage is lifting the logs, one end at a time, onto the cut table, assuming your logs are not over 8' long. Using the cut bench I cut half a cord, then split half a cord. There are no stupid questions, so keep asking... We like pictures...