I think that what she meant was that the stones you first become interested in are the ones that are not only attractive to you, but also connect with you in some way. Stones, crystals, and so on resonate with energy, and those energies can reflect on people, sometimes like magnets where the energy between two magnets can pull each other towards one another, just as well as they can force each other apart.
Each stone also has properties that can be seen as magical or spiritual. For example Tiger's Eye is a stone that is regarded for it's protective qualities, thus many people often use the stone for protection and may use the stone in protection spells, or carry the stone with them as a protective charm. Smoky Quartz is used to absorb and bind negative energies and influences, some people may use this stone in spells to banish negativity whether it be from yourself or others, again some people may also carry this stone around them for this purpose.
Just to clarify, however, stones can be used for many purposes, each stone or crystal has their own unique energy signature and properties associated with it, and you may read or find that some stones have more than one use or property associated with them. You will also find that the uses and properties of each stone may vary differently, and this is because different people, different cultures and traditions believe things differently so I advise that you do some research for each new stone you get, and don't take the first thing you read or hear about as truth. In time you will learn that each stone for you has it's own uses and properties that are specific to you and you alone. Anyway here are some books that might help you read more on stones and crystals etc:
Cunningham's Encyclopedia of Crystal, Gem & Metal Magic (Cunningham's Encyclopedia Series) by Scott Cunningham (1998)
The Crystal Bible by Judy Hall (May 11, 2003)
Crystal Bible 2 by Judy Hall (Aug 21, 2009)
The American Indian: Secrets of Crystal Healing by Luc Bourgault (Oct 1, 1996)
Crystal Enlightenment: The Transforming Properties of Crystals and Healing Stones (Crystal Trilogy, Vol. 1) by Katrina Raphaell (Dec 1, 1985)
101 Power Crystals: The Ultimate Guide to Magical Crystals, Gems, and Stones for Healing and Transformation by Judy Hall (Oct 1, 2011)
The Encyclopedia of Crystals by Judy Hall (Apr 1, 2007)
The Book of Stones: Who They Are & What They Teach by Robert Simmons and Naisha Ahsian (Sep 4, 2007)
I hope this helps,