I am working on online venture,I am making document to give details of my website requirement to vendor, I want to have a checklist/format of document

Most of my friends use www.wordpress.org and http://member.wishlistproducts.com/ to create their membership sites. Hope that helps.

Many companies entering the Chinese market want to do SEO on Baidu, promote their brand on WeChat and Weibo, and prospect on Chinese online media. This is the first step to get established in the market. However, it is necessary to define your goals. For example, if you want to generate leads, increase traffic to your site, create a community etc. your digital strategy and will flow from your goals. Depending on your goals, in China, you will find 5 ways to market digitally. SEA is a paid marketing tool that boosts your ranking in the search engines. This tool shows your business on the search engines as an advertisement. (Similar to Google ads.) The advantage of SEA (or SEM) is the speed of its implementation. This tool allows you to choose the keywords you will be found for. SEM also gives better visibility on the web since it includes banner ads.

Why don't you use Wordpress? Free plugins like s2member are available; DAP and Wishlist are great paid options. Easy to use, too.

Depending on your target group I would recommend doing facebook lead ads with a zapier integration to your mailchimp list. That works quite well. There is also an option on linkedin, where you can get directly leads within the channel. Hope that helps you :)

This is a bit of a complex question to answer, but assuming is a typical service based business website where you are using primarily for SEO, Marketing, and informational purposes - the cost is or should be very relatively low. Depending on the type of build you prefer, whether you hire a developer who knows SEO to build your website natively friendly with SEO or not will affect your final price. Not every designer is a good developer or good SEO person. But I would say, even with SEO for a basic informational website with good SEO structure should be no more than $3,000 usd... custom designing and complex animations or backend data entry would of course drive the cost up. We did some service informational sites in the past that ended up racking the clients' total to $30k. This isn't common but they were a big client with complex systems on the backend while the front end was informational only for guests.