A manga is a book normally read back to front to keep the original Japanese comic format and it is basically a Japanese back to front comic strip that tells the story via thought bubbles, speech bubbles and of couse the pictures. Anime is normally based on a Manga and is basically the pictures animated so they move and the thoughts are,like the actual speech, shown by the voice actors speaking. Hope this helps.
If you want to read manga this is good site:
link
and some episodes of anime are on youtube or just search watch anime online there are loads of sites