Photoshop CC. Digital painting of friend
A good tip is actually to take a lot of pictures-I mean all the time.
I take pictures of the wall down in the hall, you can find very
interesting textures if you take a trip in the forest or in town.
I'll make you a bet, take a trip in the city and take pictures of the
pavement, on the street-suddenly your imagination runs wild
and that's when the fun begin.
There is also a lot of free textures online, but I personally
often prefer to use my own photos so I know I want have any
trouble with copyright.
Here is a qiuck tutorial I found on how to add textures:
http://www.slrlounge.com/post-production-how-to-apply-textures-to-images-using-photoshop/
You can also find really useful tips on deviantart.
Have fun:)
