You are in the middle of your thesis and R does not do what you want it to do? You get error messages (e.g. 'x must be numeric', 'object 'x' not found' or 'unexpected ',' in...') and you don't know what they mean? Your data is not loaded correctly?
As an ecologist with focus on data analysis R is a daily used tool for me. I offer help and introduction courses in statistical programming with R.
More information on www.dr-r.help
