Rinse, rinse, and when you think you're done - rinse again. Put amount of sand in bucket, stick hose in bucket and allow water to overflow. Swish sand with your hand to release dust & light debris which will flow out with the overflow.
I highly recommend malaysian trumpet snails to help keep your sand aerated - also do not make layer deeper than 1". This is fine for planting later. If you choose root-feeding plants later, you can simply get root fertilizer tabs which are pushed under the sand next to your plant. Lasts 3-4 months. I have healthy crypts using this method.
If no snails or rooted plants, stir up the sand lightly during water changes to keep the sand from compacting - but 1" isn't too bad.