I´ll start my thesis and i found some nice templates here: sharelatex. By the way i dont get how to add the zip file of the template to teXmaker. Could anybody help me with this issue?
If you extract the zip file to a folder then open the main.tex or whatever the main file is in TeXmaker it should automatically open the 'template' i.e. the structure will all be there.
Is this what you meant or did you mean to get TeXmaker to recognise it as a template in the Wizard menu (which is beyond me I'm afraid)?