suspension question

i have a 1990 5,0 mustang while im driving the right side suspension sqeeks while i go on a bump or somethink it was raining for like a month a round christmas and i drove my car and since then this has been happening so im guessing it just needs some greasing up but i dnt know were to grease it up from doyou guys know were the little nipple things are attt
also my front tires look like there a lil camber the suspension is stock i just have lowering spring wat could be the cause to this. thank you