You can text them first, just make sure it is relevant and business related. Unless you know them really well.
You can see them multiple times in a week if there is a purpose.
If you just tell them you love them and want to marry them, then id think about your life choices
You can ask them where they live as in a suburb, but not immediately. The knowledge of a suburb could be important down the line
But freaking them out can happen if you dont know what you are doing, for many reasons