you need to add top off water to make up for evap. my reccomendation would be to put a blck mark on the back of your tank somewhere so you know how high to fill to make up (or keep the tank filled to the lower edge of the rim or something)
as far as pH the saltwater mixes usually have a buffer, the ammonia-nitrite-nitrate thing is the same as FW (ultimately, water changes), and the salinity you have to check whenever you change water to make sure your filling with the proper salinity
as far as pics, when you do "post reply" or "new topic" there is an option to attach images at the bottom