Hi custy - good to see you again. How's it going? (It's Timba in disguise, btw)
Hi rainbow - welcome welcome. I would google low carbing and have a look at some of the websites that come up. Also, custardo herself has a blog (the link is somewhere on this thread, or custy might be back a bit later to link you to it).
With regard to following a plan - I think most of us on here follow one plan or another. You will find Dukanists amongst others. I myself follow a paleo plan which suits me as a am intolerant of wheat and dairy. Our connection is that we all reduce/omit the carbs regardless of what plan we follow.
Your yogurt/blueberries/almonds combo sounds lovely. If it was me (if I had dairy) I would have it for breakfast. However, I would also use it for a snack if pushed. I personally would watch the fat content in greek yogurt - it is fine when you are having it at one meal but you can overdose on it and the fat content is high. I know we are less concerned with fat here but you do need to be aware.
Hope this help. Enjoy your low carbing. And welcome to the best thread here. 