Mary, lets see if I can help here with some pictures.
This is the side to side level adjustment. Its on the right side 3 pt arm. It will have a jam nut you loosen then turn the adjustor. Threading in will make the implement lower on the left side, and threading it out will make the implement lower on the right side.
This is the side to side sway. The two gold turnbuckles above the drawbar. There is a ring clip on each side to lock the position in when adjusted, rotate them off, then adjusting them will tighten up the side to side sway. Start adjusting them each, threading them in till the 3 pt is centered. I like to have somewhere between 1/2 to 3/4" side to side sway on the 3pt.
This is the front to back level. This is the top link adjuster. There will be a jam nut to loosen, then threading it out will lenghten it and tip the impliment to the rear, and shorting it will raise the rear.
Note in the picture the quick hitch is tipped forward. If I were to thread the top link out, would push the front back and level the quick hitch or implement on the 3pt.
For the top link adjustment and the side to side tilt, park the tractor on level surface and lower the implement just barely touching the ground and do the adjusting.