Hello, Karen, glad you came and joined us here.
1. How long is a piece of string? They each have a different time to root, depending on the variety but also conditions.
2. When you see good sized leaves forming, you can be fairly sure they have rooted
3. Dormant is: hard stem, no leaves; dead or dying is soft or mushy stem.
4. Cool but frost free; they don't need light or water during their dormant period. A garage is good, or a spare bedroom. You may mist occasionally if the air is very dry.
5. In spring the tips start glistening signifying that they are 'waking up'. It is then time to give them water, and light. Once you have a couple of good sized leaves you can start fertilizing.
Happy growing!!