Stonly
Create interactive step-by-step guides
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Hunter's comment
Stonly is the all you need customer success tool which would help improve your the kind of satisfaction a user will get from using your service in way that will reduce support costs.
It allows you to create step-by-step interactive guides that can be embedded on the web, in your product or in your help-center.
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It's the one of best web tools app for helping you making explanation/presentation with step by step. work with more tools media that you often used. Also you can add pictures media, edit with some markdown, and you can work collective with your team to always get updates information about your project. I can't check for the pricing, but you can sign-up for free.
For the people who dedicate themselves to teaching, this application will make life much easier for us, placing us at an advantage by providing us with very well elaborated tools to create these teaching guides.
I like "step by step" anything as many such things leave holes in the how to and their vagueness leaves one incomplete to say the least. I'm for this as long as there are no restrictions.