W3C Markup Errors

Hey guys,

I want to get my site clean (W3C validate). I got some Error types I cant fix allone, maybe you have a solution for it:

Error: A charset attribute on a meta element found after the first 1024 bytes.
At line 1, column 2231
charset=”UTF-8″ /><meta name=

Error: The element noscript must not appear as a descendant of the noscript element.
From line 15, column 7881; to line 15, column 7890
450px” /><noscript><img w

Error: No p element in scope but a p end tag seen.
From line 23, column 2731; to line 23, column 2734
div></div></p><div c

Error: Element p not allowed as child of element span in this context. (Suppressing further errors from this subtree.)
From line 23, column 19657; to line 23, column 19688
treibende.<p class=”footer-info vat-info”>Alle P
Contexts in which element p may be used:
Where flow content is expected.
Content model for element span:
Phrasing content.