These are some great crystals to start off with, and their meanings. (It is also good to cleanse them before using them)
Clear quartz- amplification
Selenite- purification
Tigers eye- grounding
Amethyst- insight
Aventurine- luck
Rose quartz- love
Citrine- prosperity
Black Tourmaline- protection
Edit: Some crystals will not resonate for you, or work with you in certain places. For example you may have a Rose Quartz stone for self love, but instead it only makes you anxious it may not reason with you personally, but don't fret. Try and see if you can figure out what or why it doesn't and if you can help to change that.
