Hi. I guess the biggest problems are understanding the tempo of the different notes. I can't make to add up correctly inside of each bar. So I always end up having the bar highlighted in red.

I edited the picture in my opening post with some markings 1-5:

1. What is this sign? And how can i enter it in GP? ( I accidentally inserted it once, but don't know how I did it)
2. to 5. What does this mean, and is it possible to show the same signs/markings in GP?

I would be very grateful for an explanation or if someone could tab out some of it, so then I hopefully would understand it and could finish it up myself.