Ok so before I got into lucid dreaming i had about 1-2 dreams a month but i got into it and have been doing a dream journal for a week and have had a dream everyday so far but some are very faint but its still a dream.
First Q: How long should I wait to start trying lucid dreams?

Also Q: I don't really understand dream signs and how to choose what is the dream sign of your dream. So if someone could explain that to me that'll be great!

Last Q: Does age affect ability to lucid dream? I'm 14.