Hola amigos Dan y Rick!
Me alegra que fuera útil para ti! or Me alegra que haya sido útil para ti. For me, both phrases are correct.
If you want to use the "contento" you can say something like : Estoy contento que haya sido útil para ti, or simply Estoy contento que te haya sido útil (you imply that it is talking about the tip or correction that you made for him).
Now, about the "taking a bath" and "Putting on some clothes".
I have noticed that in Mexico we dont use "ducha" a lot, even if we do know what it means, and sometimes use it in movies and tv. It is correct the way you said it "Tomar una ducha" but it always depends on when you did the action.
We often use the "me voy a bañar" , "voy tomar un baño" or "Estoy bañandome" (its like saying "taking a bath", instead of shower). Even if we are actually reffering to a shower and not sitting on a bath, "bañera"or "tina de baño" in spanish. We do know that a bath is different than shower.
In Mexico and Venezuela we use "regadera" (which translates to watering can,the one used to water flowers, due to the similarity with mexican showers haha). "tomar un regaderazo"is another slang term for taking a shower.
This brings us to a new topic (a very extensive one). How do we (mexicans) call the restroooms/bathrooms/WC? and what about toilets?
We have a lot of words for it! first i will say the ones i use and then the general part.
Toilet-Taza de baño , escusado and sometimes inodoro
Restroom/public toilet-Baño publico or simply baño and sometimes Sanitarios
Bath-Tina and bañera
Sink- lavamanos (and sometimes we even use the english word sinc in my city, due to a lot of mexican-american influence)
Toilet-Inodoro, retrete o escusado, WC
Restroom- Sanitarios, baño publico, WC
Bathroom-Baño or cuarto de baño
Bath-Tina de baño or bañera
Showers-regaderas or ducha
Espero no haberlos confundido mas haha!
The other topic was "vestirse" . "yo me visto" or "me estoy vistiendo", it depends. We sometimes say "me cambio" even if it is reffering to changing clothes and not putting some clothes on
So in the example above i would say in my daily basis :
Después de bañarme, me visto.