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).
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