You can submit only blogs there. After logging in, click on your profile photo, you will be redirected to a page which contains the option for editing your details as well as submitting the blogs. Make use of it..
What can I expect outcome from technorati after submission of my blog there? Should I expect good incoming traffic? Has anyone succeed getting traffic from technorati?
I am afraid that you may not get any kind of huge traffic from technorati. However, you can get a valid backlink which is really worthy, since it has a good page rank.
Submitting your blog on Technorati is very easy. Just create an account then fill in the required details just like what others said. Then on profile you will be asked about a blog in which you have to claim. Just put the URL of your blog then claim. Minutes later they will give you the token number and you have to post it on your blog for them to validate that the blog is really yours. After then, you will be received a notifications if they successfully find the token or not. You will be provided with instructions.