How to learn rythm

I'm a begginer and I really want to play piano. Rythm is propably the most difficult thing for me. I don't know how I shoud practise, for example, dotted quarter note.
Can you tell me how you practised it? What is the best way to play all this notes and rests? Shoud I count or do something else?
I know that I have to use metronome. Shoud I use it all the time?


Please for quick response.

Oh, I don't know how I shoud play dotted eight note not dotted quarter note!

To play dotted notes the easiest thing for me to do is think of it as three notes of half the value of the note dotted. For example, if it were a dotted quarter note count three eighth notes tied together.

To play notes and rests I believe the best thing to do is to count them, there are other methods but I think it works best.

You should use a metronome to help keep time, but try playing without it from time to time to help improve your own sense of rhythm. There will be a point where you will not need a metronome for most pieces.