10 Common Mistakes in SEO
 

I suggest, you just search it on Google. There's a lot of blogs that talks about it.

Still doing black-hat strategies is a common mistake like keyword stuffing. Using irrelevant anchor text links is another common mistake.

yaap,i just have searched it on google and read some article about it.Now,i have a good understanding about what mistakes should i avoid.

I suggest that you do your own research :)