New to dieting and obviously doing it wrong

I appologize, I was more venting than offering useful information in my previous post. I will add some detailed information and I also made my diary public to.

To start off, I was injured on the job in 2011 (its been 3 years and a couple months) and after that point in time my activity was very very low. For the first two years I would say seriously sedintary, rarely even leaving the house. It hit me emotionally very badly, and I know that isnt an excuse but I really got bad. Over the past year I have been a little more active, but nothing regular. I do a little yard work (in very short segments, when I say a little I mean a little), or I take my son to the YMCA and I use the treadmill.... but that is few and far between. I really am being honest here, I have been lazy and unmotivated since my injury, and before that I was a very active (but still a big guy) person who although I was big, 310-320, I was in great shape and in pretty good health. Ive never had a high blood pressure reading, I can usually predict it within 3-4 points by saying 115/75. I have had borderline high colesterol the last couple years, but it did not scare me enough to change my eating habits, but other than that no health problems.

Now, last Summer I quit chewing tobacco which I had done for over 35 years. After my injury my weight went from 310-320 up to 330-335 from not working and not doing anything for exercise.... but after I quit tobacco my weight shot up FAST to around 360-370. I dont know a high weight for sure because my doctor only has 350 lb scales, but I did weight at the YMCA at 362 one time, so I know I was over 360. I have maintained that range since quitting.

Last week was my doctors appointment, and like I said in my previous post, my Cholesterol went down to 100, but my sugar on my labs was 133, and he mentioned it. Now I am very scared of diabetes, I know folks who suffer from it, and that is what got me to decide to diet and improve my activities to improve my lifestyle. So on Tuesday 4/14/2014 I started logging my calories, every meal, as best I could. I started using the Samsung S Health on my phone, which is fine but didnt have the barcode scanner, so I downloaded MFP on Wednesday and started using that.

I have been using my Samsung Pedometer to measure my steps per day, and entering that data on my diary (as normal pace walking). I have not invested in anything else, but after reading some info from these forums, I think I will be this week.... food scale, a tape measure to take measurements of myself, and if I can afford it some type of heart rate monitor which monitors calories burned.

Over this past week I have greatly increased my activity, and when I say greatly I mean it as I was so inactive before. I go to walmart just to walk thru the store, I been taking my son to parks, or to somewhere else, just so I am out for a couple hours and getting some walk on. Today I went golfing for the first time since I hurt my back in 2011, and had a great time... and was amazed when I entered golf, with el;electric cart for activity, and 2 hours for time, and saw it burnt over 1000 calories. This new activity is what I suspect caused me to gain weight this week rather than lose. I ate VERY good this week save for a midnight snack and a Saturday night out with friends at a new German restaurant where I had schnitzel and a dark beer, but even with those meals I have been WAY under my suggested calorie intake. I have logged everything very honestly, frankly I dont see the point of logging dishonestly, but had to say that.

Now my intimate details:
Age: 44
Height: 6 foot 1/2 inch... or 72.5 inches
Weight: was 348 Last Tuesday, but today the 350 lb scale couldn't weigh me .
Waste Size: 55.5
Neck Size: 22.5

I can not remember what other info can be helpful, let me know if I missed anything!