If you want to enjoy the comfort of your updated home, once a moment you should begin to clean, after completion of the paint.
You can reuse the paints the next time that used by cleaning getting dry.
You can use warm and soapy water for water based paint residues and use solvent based cleaner for solvent based paints.
After cleaning your paint brushes, you can keep their initial form, in paper wrapped position.
Clean neck part of paint container and residues on its surface for reuse.
But when the paint splashed around, try to remove them by scraping after waiting for its drying.