The right type of youth soccer shoes (a/k/a "cleats" or, as the Brits call them, "boots") depend on field conditions and type of field (grass, artificial, dirt). Cleat types include molded cleats, detachable cleats, indoor soccer shoes and turf shoes.
Cleats can cause problems in young players, especially ages 9-13, when there are not enough cleats on the heel. This can lead to excess pressure and heel pain. Look for shoes with multiple cleats on the heel to help alleviate this problem. In order to reduce knee and ankle injuries, it may help to choose shoes with shorter cleats on them, no more than a half inch long for younger players.
For more on buying athletic shoes for your child that fit properly, click here [1].
Links:
[1] https://mail.momsteam.com/node/683
[2] https://mail.momsteam.com/node/6246
[3] https://mail.momsteam.com/successful-parenting/guide-to-buying-athletic-shoes-for-children
[4] https://mail.momsteam.com/successful-parenting/replacing-athletic-shoes-depends-on-childs-growth-shoe-wear
[5] https://mail.momsteam.com/health-safety/muscles-joints-bones/ankle-foot/most-kids-wearing-wrong-size-shoes-at-risk-for-foot-de
[6] https://mail.momsteam.com/successful-parenting/hand-me-downs-and-used-shoes