What are the right way to do guest posting and suggest me some guest posting sites?

Use, Google query like bellow to find sites for guest posting.

"niche or keyword" + "write for us"

You find how with free subscription on anunico you can post anything

You should contact blog owners to discuss guest posting on their sites. Do not submit too many guest posts 'cause Google will ban you.

depend on your niche,the link from industry authority webpage will have much juice

@Stevencheng From where i can get more juice to my website?

now,the juice is very low for the guest blog.

Thanks John for the info.

Guest posting site are like blog commenting
just enter your detail and press submit button
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