Hi!
OpenStreetMap is a map that anyone can edit and anyone can freely reuse. It has a huge ecosystem, and can thus be a bit confusing to edit or to work with.
I thought that having a weekly thread to ask all beginner questions would be nice for everyone interested, so - go for it!
If you know the answer to a question, please answer (so that I don’t have to answer everything).
Is there a way to map temporary changes? Mainly thinking about road under construction and such, but also even more temporary ones like streets being blocked of due to large events.
The rule is that we don’t map temporary stuff (such as events).
However, nothing is truly permanent. So, it depends a bit. If you have road works lasting for one week, feel free to map them and to restore it as not-working a week later ;)
Road works lasting >6 months are typically mapped - at least in my experience. There are no hard rules about this though and there is no consensus in the community. At last, have a look to the lifecycle prefixes: https://wiki.openstreetmap.org/wiki/Lifecycle_prefix