Some keys on qwerty no working after getting wet

i was given a pantech matrix ( green and grey) phone that had gotten wet.. the "t" key on the keyboard doesnt work and the h is slow..i want to repair it myself.. what parts will i need and is there a site that can show me disassembling and reassembling directions? also there are small specs on the right side of the screen perhaps damaged pixels? they dont really cause a problem but if im gonna take my phone apart might as well fix everything at once