While openig a pool is probably easier than closing one (properly), there are a couple of things that haven't been mentioned.

Make sure all your plumbing connections at the pump/ filter are not leaking (lubing and keeping sure that any "O-rings" stay in their grooves) for unions (aka quick connections), retefloning (after removing ~most of the old tef) any threaded connections. This also includes the various air relief and drains on filters, pumps and filters. ---- Just make sure that you aren't leaking any water nor drawing any air in on the influent side of the pump. IF IT'S ~RUBBER - LUBE IT LIBERALLY WITH A SILICON OR TEFLON BASED LUBE!!!!!!

Clean the cover (obviously - only if you covered the pool ) and let it thoroughly dry before folding it and storing it for the summer;

1) Drying the cover on your lawn, too long, can kill the grass
2) Fan folding (or 'sailor folding') will make the installation easier next fall (to do this get 2 people and stand at the back edge of the cover, each of you place your foot ~ 3' in and pull the cover back to the edge, step on the cover at the fold and repeat until you have a nice 3' 'fanfolded' cover, each person starts at their end and makes 2 - 3' folds until you have a nice (and easily mannaged) 3 X 3 cover which can be easily stored for the summer. ** mice and other critters tend to make their homes in stored covers - do whatever you have to to prevent this.

If there's a lot of stuff on the deck sweep or rinse it away before it goes in the pool (optimally, this will have been done before removing the cover)

The rest you know, remove any large debris, check your chem levels, & shock and adjust the other levels.

Enjoy a trouble free swimming season by doing things the "poolforum way"