Congratulations Juerg!
I know it took some time but you are now ready to go have some real fun.
From your discriptions of loading and shooting it sounds like you have a good understanding of what is required. My only other suggestion is after you have shot 5 or 6 times, when the range is clear to go down-range go collect the fired patches which will be on the ground about 3-5 meters downrange.
They should not have cuts from the rifleing in them.
They should look very dirty but should not have areas which are burned thru.
If they look alright, put up a new target and have more fun!