What are hydroxides,peroxides?and teach me the types of them.

Hydroxides contain the hydroxide ion, $H {O}^{-}$; peroxides contain the $O - {O}^{2 -}$ linkage
Of course, in hydroxides $O$ formally has a $- I I$ oxidation state, whereas in hydrogen peroxide, $H O - O H$ (or peroxide dianion, $O - {O}^{2 -}$, the oxygen bears an $O - O$ linkage; that is it formally has a $- I$ oxidation state . The peroxide bond is weak as bonds go, and cleavage of the $O - O$ can readily occur, as shown in the following equation:
${H}_{2} {O}_{2} \rightarrow 2 H O \cdot$. This hydroperoxide radical, $H O \cdot$, is neutral and very reactive.