In the video above I'll walk you through Schreiben part 1 of the reality check.

In the following lectures you will find ten more such exercises. That should suffice as training as there is only so many things one can fill in a form on A1 level. At the end of this course you'll find links to several free and paid sample exams to check whether you really got this or not. I have no doubt that you can do this easily after working through the next exercises and a few sample exams a couple of times.