I want to know about multilingual SEO and tell me the process and how to do multilingual for websites...
Multilingual SEO is the process of providing optimized website content in many different languages specifically for various geographic locations.
The crucial part for you to do is figure out targeted locations & languages.
Then pick your domain and/or URL carefully.
View detail here
What follows is a listing of the ccTLDs. Remember that Google often changes this list.
I believe, the best choice for a big web site is to either a directory or subdomain construction
Other aspects to consider
Indicating Local Landing Pages Using the Rel=”Alternate” Hreflang Annotation
The X-Default Hreflang Attribute Importance
On-Page Components such as Title, Description, H1 etc.
User IP & Use Agent Recognition
On the whole
Mutilingual and multiregional SEO is definitely evolving frequently. I anticipate this to become an extending issue as we go ahead of this outrageous Web community. A very important factor that I appreciate regarding how everything is changing is that when you look closely at new tactics for search, you are likely to get other incredible ways to better your internet business.