Definitely with content. It helps to get crawled and indexed better rather than putting the website live without any content. Your visitors might not go back to your site if they see that the content is empty.
thanks to all
but tell me one more thing.
what is the maximum number of times in a week to update my site in a week?
can i do it more than once in a day?
actually..i want to make it useful as soon as possible. what is suggestion?
Well, I suppose you could really start promoting right away; infact it is best to start promoting right away, but remember to add a lot of content. I mean I guess it depends if you plan to add more content right away then promoting first is the way to go.
I think you should at least update your blog once a day with something interesting. It doesn't have to be some long 1000 word post, but just writing a short informative article when you're short on time is good.