Quote - -- choose Cycles Render (top near the main menu - you only do this once)
-- Edit mode: select your mesh to texture, assign a material (like in Blender Render -> Material area)
-- have a node window open
-- you might see a Use Node button in the Material Area under Surfaces: click it
-- the default material you get is a DiffuseBSDF connected to Material Output
-- in node editor, [SHIFT][A] (add) Texture -> Image_Texture
-- connect Image_Texture color (yellow) out to DiffuseBSDF color in
-- browse for your texture by clicking the Open button on the Image_Texture node

 

Thanks a lot, and sorry for abandoning the thread for "ages";) Tried but the result is rather strange, the object (the roundish wall in the lower middle) doesn`t display any texture (normals point outside). Maybe the problem is I had no Use Nodes buton in the material options?