How do I get to 100 visits a day?

Turn one or more of your tutorials into a useful infographic or meme (such as showing step by step instructions). This can go viral on Pinterest or Facebook, to be shared by others.

Buzzbundle is good

Use the many websites around that give you banner and text ad views, socialx20.com and sites like that, you can get your banners and text ads shown thousands of times, just display something pretty to get people to click your ads.

make sure to put links to other tutorials in a post which create blog engagement.
Something should be attractive instead of "related posts". You can replace the text with "You must be looking for".
so far as i know, tutorial are really case sensitive. if they did not reach the brain of the reader at once, they are worthless. make sure to keep them easy. photoshop tutorial are really interesting. you can put links in between the post anywhere to engage a visitor. once he recognize your blog, he will visit your blog very frequently to check if there is any new posts.

One thing also matters and that's ranking in SERP. Try some link building tactics to rank much better for better rankings. its hardly seen a visitor clicking on the second page of search results. SO, keep these things in mind.

Post your website on related reddit subs

We are getting at the moment over 300 people to our website through Twitter (almost 10%). I found that Twitter is quite good to get traffic, but the average time spent is always quite low. Maybe try backlinks on Q/A websites or G+, Facebook.

viral video is the one of good choice

Use unique content and keywords in your website. or
Use Pay per Click Method for it.