Meringues are dead easy to make as per jenny/LCG - tips include (i) the oven as low as you can make it, the oven clean too - and, yes, do not open the door. Cook for the hour and then just let it cool in there. (ii) whisk the egg whites and sugar stiffer than you would think - a metal bowl is better - the old trick is so stiff that they won't fall out of the bowl when you put it over your head. Some folk say add a drop of vinegar, or cornstarch - not necessary, the cornstarch serves to make them a little more 'caramel' in colour. A drop of vanilla essence if you wish.
(iii) don't bother with piping or spoon work at the moment - onto grease paper on a tray and shape into a rough circle and there you are, bingo. (And they taste better than shop made s..t).