I don't seem to have posted on grounding and centering - and since I just did it in a group on FB, I'm going to share that post here. Enjoy!
Grounding and centering is some of the most basic energy work you can do. The surprise is that so few folks seem to consider these things to be energy work!
Grounding is just keeping a clear and active energetic connection with the Earth/Malkuth/the material world - this is the energy of manifestation. There will be plenty of times that you will want to connect with other sources of energy for specific purposes, but for day-to-day magic, this is what you will need - magic to make changes in your life and the lives of those around you.
Much of what I suggested in my post in The Start Menu was aimed at clearing away barriers to being grounded, clearing away things that keep you from having a clear and active connection to Earth Energy. As you can tell from that post - I see most of those barriers as being self-inflicted.
What I do now for grounding is just turn my attention to the always existing connection between me and the earth, or make myself a cup of coffee or tea, invoke Earth with the cup (earth invoking pentagram: top middle of pent to lower left/lower left to upper right/upper right to upper left/upper left to lower right/lower right to top middle/top middle to lower left) and drink it mindfully. But for beginners, taking the time to learn it thru' a guided meditation is a good idea. There are many such guided meds out there - here's a link to one of Patti Wigington's: http://paganwiccan.about.com/od/dreamsandmeditation/ht/EarthMeditation.htm
Now - centering.
For me, centering is being clear on where you end and the rest of the energetic world(s) begin. Making sure that you have barriers keeps you from being blown about by random strands of energy that are in play in every day life. It gets even more important when you're out and about playing in the Other Worlds, too.
I LOVE the Emerald Heart meditation for this, published by Ivo Dominguez, Jr. in his book "Spirit Speaks" https://www.amazon.com/dp/B001EHE4K0/ref=dp-kindle-redirect?_encoding=UTF8&btkr=1 I'm a fan of the entire book, for that matter. But that's not for every day work! For everyday work, I like to just move my awareness to what some call the 'transpersonal chakra' above my head, notice it bringing energy to my auras, and focus on having it pump out a silver sparkle colored (to me, at any rate!) energy to cleanse my auras/chakras/etc of uninvited attachments and strengthen my auras in general. I've also had great results on centering from doing what's like 'chakra tuning' work, just focusing on each chakra in turn, from sacral on up, spinning in it's appropriate color. Again, there are tons of other exercises out there aimed at helping you center, just like there are plenty of them to help you ground.
So - ground. Center. Be wonderful.