Beginning of growth cycle questions

Hey! 1. The amount of times your water really depends on how fast the soil drys. I normally water 150ml-300ml of water in the first days. Sometimes it'll be more times a day, is best to give little by little and add as needed rather than giving too much and drowning them. Best way to water is by misting that way you won't apply pressure on the seedling as it seeks light. 2. Covering the seedling with a plastic bottle, cup or whatever is just to maintain humidity as in this stage a 60%-70% is need for fast and healthy growth. If your environment meets the needs, don't worry about the "humidity dome". If you do need it, cut some holes on the sides to create airflow. That's it. I have a few pictures on my Gorilla Glue diary of a cup like that if you want to take a look. Hope this helped. Good luck and happy growing!