Walaykum asalam wa rahmatullahi wa barakathu! :)
Instead of answering all of your questions, I’m going to link you to a great PDF/book solely about dua, called Dua: Weapon of a Believer. It’s 237 pages long but you can check out the index to find answers to your questions and more insha’Allah.
Forgive us for answering this so so late and let us know if you need more help.
tagged as: dua. islam. reverts. muslim. qibla. wudu.