Hello, my plan is to build the route between Tel Aviv Savidor Center and Jerusalem Yitzhak Navon. It's a large route of roundabout 57km, so for me it's just more to get into editing routes. I'm an absolute beginner so please don't wonder. Right now I'm trying my best with searching the LIDAR data, which needs time if you're new. If somebody with more experience has tips, I'm always grateful. If I got the first updates, I'll post it here, but please be patient About the route: https://en.wikipedia.org/wiki/Tel_Aviv–Jerusalem_railway
The only hint would be to start with a very small scale fantasy project, as you'll likely make errors you find out later when it's impossible to undo the changes. Trying to replicate a real route without any experience whatsoever will result in you being frustrated and the project being stopped someday, as learning needs positive results and achievable goals to keep you motivated.