Update your content rgularly and link to it from good website - Google will take your site also as quality one and having a lot of good content and will visit your site more often.
You also need to make sure your site is set up properly seo wise in the first pplace, then keep updating every 2nd day.
Blogging, article writing and regular maintenance of your site for new updates and content can be a good help, Google will surely notice your hard works. Also find ways on how to create backlinks on high PR websites.
I have started my blog (WP) a month ago. I have been writing very regularly and google indexed my homepage and new post almost straight away. Didn't have to set any crawl rate. Get a few backlinks and write regularly like some have said. That should do it. Good luck.
regularly update your site's content and get good links everyday make sure you got approved links and being indexed by google.
No one really knows when Google changes its algorithm and updates websites, but at the least, you can post updates more frequently and make changes to it. This can 'speed up' the indexing process.