I need to put in one single worksheet the data of 800 worksheets in the same document

So, I have an excel workbook with 800+ worksheets and need to join them in one single worksheet. They are all of the same range. Dont know very well the macros so please help me step by step. I want to usea a loop or something like that so i dont have to put one by one the number of the sheets.

Thanks a lot.
Ricardo.