Hello Karin, welcome to he weight loss forum. Wow 70 kg, that is a very large weight to lose, my best advice is to start slowly and gradually the weight will be shed, best of luck on your goal and you will alwyas find motivation as well as any help within these forums on a daily basis.
There is a food and exercise day by day listings which you can share if you wish, i find it helps in seeing the progress. Also, there is a ticker, like my signature, which you might like. If you click on 'Dolly's' signature it will bring you to the website and you can follow the steps to make one of your own.