PSD is native Photoshop format and supports most of Photoshop editing capabilities. You can send to some (not to all) printing companies PSD files. Otherwise save file for printing purpose as PDF or TIFF.
Adobe Photoshop CS 4 is one of the best photo editing software.
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I recommend picnik. :)
photoshop software.
Yes, photo paper is specially made for photo printing and will convey the image with the best quality like a polaroid camera uses.
Digital photo printing paper from Kodak is great for printing your photos.
There are many photo editing services to choose from. Trying to sort them could be a huge task. Here is a site that will compare them for you: http://news.cnet.com/8301-17939_109-10170333-2.html
I am a 3rd year graphic design student and the best program for photo editing is Adobe Photoshop. It is the best. However it is pricy so if your only going to be using it for minor photo editing I suggest MGI Photo Suit. For Photoshop look it up at www.adobe.com and MGI Future Shop or Best Buy is your best choice.
Inmagine is a photo stock company. Inmagine is a highly creative company with services of photo enlargement and digital photo editing and their service is 24 hours a day.
4.7-74x*43h= resolution
The best editing photo apps include Snapheal, Tonality, Noiseless, PicLab HD, Sktchy, SnappyCam Pro, Photoristic HD, Pro Camera 7, and much more.
Here are some best photo editing apps are listed : (All are for Android) 1. picsart-photo studio 2. Snapseed 3. Instagram 4. Pixlr Express 5. Flickr 6. Photo Editor by Aviary 7. Repix 8. Litely 9. Photo Studio