Where to begin

So i am a Veteran and while in the service i kept myself lean and worked to strive where i needed to be. After getting out of the military i stopped and put on a lot of weight. I went from 195 to 229 quickly. Last week I saw a picture of myself with my 2 daughters when we were at a restaurant. I had such a glow about me at this time that i sat wondering what happened to that person. Therefore last week i decided im going to get back into the best shape of my life. My work at times is very demanding as im an electrician. I dont want to run when im done working and dont have energy to do pushup or sit ups right now. So i am starting with the lifestyle change of eating. After doing a ton of reading, I decided that it wouldn't be hard to try the Ketogenic diet and therefore that is what I'm doing. I started Tuesday (8-29) and as of this morning i have went from 229.6 to 225.8. I still have a way to go as i have a lot of body fat that I would love to melt and get lean. Hope to find friends here to help me along that Journey.