Informed is empowered. You're going to learn so much by regularly testing your morning fasting blood sugar and your 2-hour post meal blood sugar daily.
To answer your question about how to get started changing your diet to the LCHF diet, or PFC as Cassie Bjork, RD puts it (Protein, Fat, Carb), here's a place to start online...
Part 1:
http://www.dietitiancassie.com/pfc-balanced-eating-part-1-what-is-pfc/
Part 2:
http://www.dietitiancassie.com/pfc-balanced-eating-part-2-the-components/
Part 3:
http://www.dietitiancassie.com/pfc-balanced-eating-part-3a-faq/
Snacks - Why eating a piece of fruit for a snack with no protein or fat will spike your blood sugar and make you hungry...
http://www.dietitiancassie.com/snacking-on-a-banana-is-bad-for-me/
Some snacks are naturally "PFC" and quick:
walnuts, almonds, pecans, and other nuts, though not peanuts which are legumes - (raw or dry roasted with no other ingredients such unhealthy polyunsaturated oils, or salt or other unwanted seasonings bought in bulk or in your baking section) or seasonings
avocado - I eat half with a spoon and put the other half, seed removed, cut side down on a flat plate in the fridge for later
1 ounce of cheese with a raw or steamed vegetable of your choice
vegetables - some have good amounts of protein and carbs, just add a small amount of extra virgin olive oil after steaming (e.g. brussell sprouts) and some have carbs and can be eaten raw with FAGE 2% greek yogurt which contains protein and fat (e.g. raw vegetables like 1/4 to 1/3 a red pepper and same of a green pepper sliced and eaten with yogurt).
In the beginning, small amounts of berries mixed with yogurt and perhaps a little bit of chopped nuts are better than fruit.
egg - with a raw or cooked vegetable or a small amount of berries - (boil 3 or 4 ahead of time and refridgerate)
Fast, Grab and Go Lunch...
2 slices ham, 1 or 2 slices cheese - (I like provolone) - wrapped around a dill sandwich pickle and a side of raw vegetables
A few more thoughts on the basics...
http://www.dietitiancassie.com/back-to-the-basics-nutrition-101/
One of the BEST online websites on LCHF...free, packed with information, recipes too...
http://www.dietdoctor.com/lchf
To bottom line it...
Drink lots of water. I typically drink one cup of water for every cup of coffee, black tea, green tea, or chamomile tea I drink throughout the day.
Eliminate sugar, grains, starchy, root vegetables (i.e. vegetables that grow underground such as carrots, potatoes, etc.) and legumes, also cooking oils that are primarily polyunsaturated fats from your diet.
Eat whole foods, not processed foods.
Eat a variety of vegetables throughout the day for fiber and nutrition; eat a variety of colors throughout the week. Small amounts of berries - blueberries, raspberries, strawberries, blackberries, unsweetened cranberries) - are preferred to fruit in the beginning.
Eat enough protein for their essential nutrients and to avoid loss of muscle mass.
Eat fat to curb hunger and cravings, also to get the calories needed now that you've eliminated the some problematic carb dense food groups.
If you buy one book, I'd chose Eat Fat by Trudi Deakin...
http://www.xperthealth.org.uk/at-risk-of-diabetes/a-step-by-step-guide-to-low-carb-living
Join us daily on the Low Carb Diet Forum...
http://www.diabetes.co.uk/forum/category/low-carb-diet-forum.18/
It's learning process. I'm beginning week 10 on the diet and still learning, correcting my eating mistakes as I go...