I just received my Slackline and this is only the second time that I make. And I already manage to make butt jumps out and make sitting through. So it's not that complicated. The important take time to mount the Slack on trees trunks out rights. Otherwise it tilted the entire structure.
Feel free to watch tutorials on YouTube, either for technical or for mounting. No complaints about the Slackline, it is solid and super high quality. In addition, both great in black with white print.