Your wine should fall in the 3.0 -3.5 range. If its over or under we try to adjust it to get it in there by adding acid or by trying to remove acid in some way. The ph of wine is 1 of the most important things as if its not in that range it is much more susceptible to microbes. Also, knowing the ph is how you know how much sulfite to add.
Rinse well and I blow it off then place the cap on filled with 4.01 solution. Store it in a cool place upright. As Wade said check monthly to ensure it stays moist.
There are a few tutorials I did. After reading them let us know if you have any other questions.