ROUTINE POOL MAINTENANCE
Once opened your pool will require periodic checks to make sure the chemical balance of the water is correct, the filter is clean, and any debris is cleaned from the skimmer, pump pot and pool bottom. If you are still new at taking care of your pool I suggest you test the water at least every two days until you "get to know" your water. This is a good idea even if you are a seasoned pro. Even better, keep a log of your pools chemistry so that if a problem develops you have a reference of what you have done in the past and learn how to avoid problems in the future. Vacuum at least twice a week and brush the pool daily. Brushing is the most under rated pool care tip. Regular brushing will reduce the chances of your pool having an algae problem, I guaranty it.
If you are so inclined and have the spare change, invest in an automatic pool cleaner. Yes, they are expensive, but what is your time worth to you. On the average it takes an hour to and hour and a half to vacuum your pool. Multiply that by two times a week, times four weeks a month... you get the picture. There are several on the market but Polaris, Arneson, and Kreepy Krauly are among the most popular.
If you have a lot of trees around the pool (or the neighbors trees are compelled to shed into your pool) I would suggest you get a leaf bagger. Most pool stores sell them and they are the best for removing heavy leaf debris from the bottom of the pool. This is especially true when your winter cover dumps the entire load of leaves in the pool when you are pulling it off. You can usually find them for under $50.