40 Sites with Amazing Free Stock Photos
Amazing list of 40 Free Stock Photo sites who offer beautiful high-res images for free. If you are a graphic designer you will want to bookmark this amazing list! 
Design Guide: 10 Design Principles every Designer should know
A Beginners Guide on How to Become a Better Graphic Designer - 10 Principles and Elements for Succesful Graphic design, illustrated with visual examples. 

Lovely designs but service is slipping and quality dropping when it used to be excellent. Feedback on their site is completely fake (they will only post positive reviews) Been using them for over a decade but my last order was disappointing: send them a perfect high-res image but the print was blurry and showed a blue-ish hue all over. They are reprinting, but it will be to late by the time they arrive.
Rating: 3 / 5
Hello, I called customer service a few days ago with questions regarding the wedding cards I was attempting to order. A customer service representative by the name of Samara, not only navigated me through the site but informed me how to change colors, fonts, where to find offers, how and where to request the quick shipping (fasting shipping) and information on how to ask the designer for minor changes. She was extremely efficient, professional, knowledgeable, competent and friendly. Like I stated to her, I am extremely stress prone so to have such a pleasant experience and smoother process with ordering my wedding invites, that call truly made my week! I will be referring any and all contacts to order from this company, as she was just so helpful and resolved all my issues.
Rating: 5 / 5
Vistaprint is best value for money, i've been using them for businesscards/flyers and stationary. They never let me down.
Rating: 5 / 5
Pretty good price / quality ratio.
They offer you a full range of styles and colors. They will also notify you in case your text or image are inappropriate.
Shipping was terribly slow. They need to work on that.
Rating: 4 / 5
Im not happy with Cafepress: I ordered a long sleeve tee shirt, but the design was off center. The print is shifted to the left of the shirt instead of centered. Also the fabric is low quality, the shirt already has a hole in the front.
Rating: 2 / 5