We are looking for a simple and clean logo, that still maintains a professional touch, is not too busy and moves away from any &quot;straight line/object&quot; concepts (e.g. not just circles, squares, etc.). I have attached some logos that I like the look of to give an idea. Quite liking possible concepts of either something abstract representing online resources, some kind of typographic design or a styled shape involving the letters TSL. 
 
We have had some other designs done which have involved trees, books and puzzle pieces, but we are still looking for something that has a more unique and innovative/creative edge. Trees, books and puzzles are still acceptable though. 
 
It needs to be something that is aimed at a wide target audience of students, parents, teachers and professionals. 
 
We will also be using the logo to watermark resource documents when they are in preview mode, so need something that can adequately fulfil this job without looking out of place or being too in your face for the viewer.

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