Legos
Starting out with CiviCRM is a lot like opening a box of Legos.
You may have seen what's possible by looking at what other people have done, and you can definitely get a sense of how things fit together by playing around with it here and there.
But you're not going to build anything is cool as this Taj Mahal or even this simple bank building without a lot of careful planning, or a very clear set of instructions
If you're starting out with CiviCRM, or have significant improvements in mind, be sure you take the time to make a clear plan, based on clear business goals.
You don't want to wind up with a pile of bricks.
All the best,
A.