I've been keeping a blog of my experience of creating my photo apps over the past two years.
I've learned quite a lot, and thought it might interest other newb developers like me, and more importantly help them avoid the tons of stupid mistakes I made in the process! Covers a wide range of things, from planning, developing, marketing.
Here's the link in case you wanted to check it out : http://learnphoto.ca/newbappdeveloper/
Thanks, have a great day!