Scotland is more free of restrictions than the rest of UK. We have now an access code which gives freedom to roam almost anywhere, as long as this is done responsibly, with consideration for others and the land its self. In other words, "leave no trace" that you have been there. There are a few restrictions, to preserve the privacy of people who live in the Countryside and restricting you from interfering with the work of those , whose job involves working on the land, The main restrictions relate to having open fires, permission of the landowner should be saught before having an open fire. However you are not likely to have any hassle if you use a stove. Even a woodburning "hobbo" type, or spirit stove, or even a Gas stove. It tends to be expected that you only camp in one spot for two or three nights at a time in order to let the ground recover. There are plenty of books here to keep you on the right side of the LAW . Do not expect to carry a fixed bladed knife openly on your belt in public places, keep it in the bottom of your pack till you intend to use it. Also have a good excuse for carrying it, (not for defence) The laws in Scotland are different from England, and many people down south do not seem to appreciate this fact. You may even find that outdoor books may not include information as to how the law differs up here. If you look on the WEB. For Scottish Access laws, or "Freedom to Roam" you should be able to get fuller information than I can give you here. Best time of year to avoid the dreaded "midge" isbefore the end of May, or the beginning of June.. Even most Scots try to avoid the Summer especially. The West Coast when the "Midges are about". Early May is often the best time of year for good dry weather on the West coast, which has the nicest scenery and Wild Life, and plenty of isolation for Wild Camping, but supplies can be few and far between, as there is less population on the West side of the country. Hope that this is of benefit to you and that you enjoy your stay if you do come to Scotland. A great many Germans come to the West and North coast because of the lovely beaches and warm water in the sea due to the effect of the Gulf Stream. Best Wishes. Stuart.