Hi all. I may be thinking of building a website for somebody, but am unsure about what to do with ongoing maintenance. They asked me to be adding content to the site every two weeks or so, how do you guys do it - charge per change, include that in the cost price, build them an app to be able to modify the wording etc? Also, is there anything else I should look out for? This is my first project for someone I guess, I'm a little unsure. Thanks.