Hey there and welcome to the forum!
The answer to your first question is that I believe that you could have been in some sort of Sleep Paralysis, and maybe had even seen some Dream Imagery along with it. For the 2nd and 3rd questions, those are just normal dreams that you might want to keep track of in a Dream Journal, so in the future, it can be used to increase Recall, and could help LDing as well.
Yes, being able to recall them is normal, and good luck on trying the methods MILD and WILD...you might even consider looking at the Tutorials section before you attempt it.
If you have any other questions, feel free to ask!