Hi Peter and welcome.  It's really not hard, you just cut out sugar.  The hard part is working out everything that has sugar in it, at the start, then you just get used to eating differently, your appetite starts to work, you eat less, and feel better.  I lost 10 kg in the first month, 6 in the second and have been stable at that for two.  I don't recommend having a 'goal weight'.  Let your body tell you what you weigh.  If you care about weight loss, you may put more work in to trying to make sure you never over eat, but if you choose a number, who says that number is healthy or possible ? Starving yourself gives you more scope to do that, eating sensibly without ever going hungry, it will depend on how realistic your goal is.