Content shamelessly “borrowed” from the US blog. Doesn’t affect the quality of the tutorial though 
“For anyone who is interested in t-shirt design, check out this nice tutorial from the Layers Magazine website. T-shirt designer Jeff Finely takes you through creating a t-shirt design using vector graphics in Illustrator.
This gives a pretty nice, not too complex overview of turning a photo into a vector graphics for t-shirts. The t-shirt used as as the example is a bit too complex for Spreadshirt´s print types.
Since Christmas I have been on the hunt for a way to turn a photograph into a vector graphic. This tutorial is a good overview of that. If you are going to use your vector for a Spreadshirt design, make sure it meets the minimum requirements so that it is possible to turn your design into a design on the shirt. For more information on the specifics of preparing vector graphics for Spreadshirt visit the shop partner admin. “
Ami
Dave
Michel
Tobias Huber
Good tutorial and is a good starting point for beginners like myself
)
anything that mentions A Wilhelm Scream is always going to be good (They are not screamo as described in the article, more hardcore punk