i just bumped into two plumeria seed pods on a low tree....
is it posible to get some help on how to grow?
when do i know for a start that the seeds are ready?
we soon will be in autumn.....
should i wait for spring for the whole process?
etc. etc.

Make sure the pods are ripe; they stay on the tree for 9 months, through the dormant season.
A ripe pod will start to dry out and crack. Then the seeds can be easily taken out.
I put them in vermiculite or just some well draining soil and mist several times a day.

If you have ripe seeds you can start them any time.

thanks for your advice.....why is it so rare to find seed pods on plumeria trees?is it a matter of age?

Nothing to do with age. It's all about the pollinators. The type of Plumeria makes a difference too. Some are great pod setters and others will never give you pods.
Here is an example of a great seed setter ( a Plumeria obtusa type):

Wow that's a lot of seedpods. Is this your plumeria Hetty?

At the Naples Botanical Garden. So yes

WOOOOOOOOOOOWWWWWW

Hetty, forgive me that I laughed. I thought you named your private collection Naples Botanical Garden and was thinking of naming my collection "KD's Botanical Garden."

Forgive me if I'm wrong again...you have plumerias growing at the said garden?

@KD did you google Naples botanical garden? Lol

I think naming your collection KD's Botanical Garden would be perfectly acceptable.

However, I am the curator (and founder) of the National Plumeria Collection at Naples Botanical Garden which is why I feel proprietary about it

The One And Only Hetty Ford!!

Now I know...quite impressive...proud for you!

@Dutchlady1 - Well Hetty, now I am overwhelmingly impressed. Before I was sincerely impressed.

is the sap of a plumeria dangerous for cats?
and lillies of all types?