Yes, I did originally say that this blog would not be about guides; theorycrafting and so on. There are plenty of folks in the WoW blog community much more capable than I to fulfill your needs in these areas. The reasons for todays' post does come under the other heading of writing about what has my interest in the game at any given point. Which brings me to the slow but sure development of my user interface. Which is still a work in progress!
Background: When Sol finally hit level cap in Wrath, his attention turned towards end game. In particular, he wanted to PVE and raid. This all happened rather late in the expansion, with most other folks already farming ICC. Undaunted by the hills ahead of him, everything came under the microscope. Gear, dailys, LFD, various add-ons he never used before and the user interface. It became a long journey of learning things, and then trying to put them into use.
TL:DR; This post was written with the "new player" in my thoughts. Hopefully, it will be of some encouragement and/or help for them in the days of Azeroth to come. If I were to offer advice, it would be to start out slowly with a basic add-on (such as your mini-map), and build from there. Take time to use each one to see if it fits you, then move on to the next.