Mr Adam

I appreciate all your answers, especailly the catacaustic’s one.
I agree with you and also believe that the key in getting something done is in starting it.
I would just like to understand the extnet of it, the extent of developing a high quality WP site. Also, what I am trying avoid is, investing time and money into something that (1) nobody’s going to use, and (2) something that will not be finished. Quite honestly, I find it very discouraging when after investing a lot of time and effort, I can’t bring something online.

The goal is to make a site for fitness trainer.
After reviewing all kinds of CMS, I found WP to be something that fits my goals. So I downloaded XAMPP, set up environment, downloaded WP, and created a test app. (btw, which hosting and domain name services do you suggest?)
Then I heard about themes. I found out that this one could fit my goals:
http://vamtam.com/?theme=fitness
That is why I asked – what do I get when I buy a theme.
My assumption was that the frontend should look more or less the same as the bought theme. But then on this page (http://themeforest.net/item/fitness-sport-gym-responsive-theme/8860972?ref=vamtam) in the showcase section, I found the following site (http://jenheward.com/) which looks completely diferently from the theme. Therefore, it seems to me that the mentioned theme did not bring too much, because the showcase site looks completely differently.

How we come to the necessary skills – my assumption is that it’s necessary to know (1) how WP functions, and how to adapt a theme using child theme concept, (2) PHP knowledge, (3) Photoshop knowledge.
Am I missing here anything?
Reegarding the first point, I would ask for a recommendations regarding the tutorials, because those ones I googled are just small chunks of a whole development process. And I can’t see the big picture… I can’t grasp how to adapt a theme… what is the core of it?

As mentioned before, I still have impression that a lot of PHP coding is necessary to make a site as the one I mentioned before… and a lot of Photoshop skills… Right?

Another what I would like to know is – does it pay off to buy a theme. I know you will say sthg such as – that is relative… there are good and bad themes… But the question is also – what do I get with the theme? There are different licenses as well – “standard” and “extended”. Although I read what it says about them on ThemeForest site, I still can’t see the difference. Can you explain that as well?

You know what would be extremely helpfull – to get a fast motion time lapse of building an APP, same as fast motion time laps of building a house. Please skim through this video: (https://www.youtube.com/watch?v=Qc5nLrI5raM) Here everybody can see the core – (1) how the whole process goes, (2) which things have to be build first, which have to be build after some other things, (3) estimate required effort – if I see this, than I can definitely say – ok “this isn’s so complex as I thought. I thought it’s like building a highest building on planet. I can do it myself. I just need to focus on this and this”. Or I can say “ok, this is more complex than I thought. It’s better either to pay somebody to do it, or maybe it’s better I forget the whole thing.”.
Same thing I would like to know is – how the process of developing WP app goes, and what is the extent of it.

Those are few thoughts and few ideas I had on my mind, and I had to share them.