DIY & Home Improvement

(for the OP)

1) Make sure you compact the sand after about every 2".
2) You'll want a few inches of pack material or sand under the pavers. The exact amount depends on how much clay there is in your soil. You'll probably need a minimum of 4".
3) If you want to avoid the weed problem, use polymeric sand for the sand-between-the-pavers. It has an additive that causes the sand to stick together better, thus preventing weeds while still allowing movement.