Cheapest Digital Cameras for Photography, Youtube Videos and blogging?



My budget is only 200 to 300 dollars.
My main use is for taking Architectural photos for my photo collection and for my studies in Architecture school. I also want to use this for taking 1080p HD videos for Youtube videos and also for my life blog. :)
The bigger the SD storage the better, and if it fits the budget, I would also like a swivel-type screen for easy self recording. :D
I will probably use an external microphone for the audio recording, if so can you also suggest me a cheap one but is also good for starters? Big thanks! :)