Thsi has been done a million times before and is easily found on the search engine, however Im bored
If oyu going to do a PPL and wanna start the exams , the best way to do it is air law first , as you cant go solo without it . Not forgetting to get your class 2 also . Then start Nav as this is what you will get into once you have been solo and start consolidating and you have to have passed it prior to your qual x country , I satnd to be corrected but I think you have to have passed met too. Then do the others as you see fit . All must be passed prior to licence issue and I think the GFT .