Welcome to the boards!
Unless you're a jockey or doing something where you must be a specific weight, toss the scales and measure your progress by bodyfat changes or how your clothes fit. Muscle is DENSER than fat. If you trade 5 lbs of fat for 5 lbs of muscle, your scale weight stays the same, but your body and measurements will be smaller and tighter. Muscle will also increase your metabolism. It has shape and does not jiggle.
I don't like detailed diets either, but these are some rules I stick to: 5-6 small meals per day, each meal should contain some protein, never eat carbs without some protein. Not all carbs are not bad, just the "simple" carbs (most anything sugary, refined like white bread or highly processed like most convenience foods). Not all fats are bad either, tuna and salmon are good sources of omega 3 fats and olive oil, avocados, walnuts are good sources of omega 6 fats. Healthy fats actually help your metabolism, among other things. Do a search on "healthy fats" for more info.
...I started sports when I was 10, so I have accumulated muscle mass over the years. In a previous post, I mentioned that I had gotten to a weight of 134. I did this by lifting and doing cardio almost everyday. I would just alternate upper and lower body each day. Even at this weight, I did not look lanky, and I had more body fat than I wanted.
Strict dieting such as the "3-day diet" can cause muscle loss. Same with doing too much cardio or weight training everyday. The body needs time to rest and rebuild. With too much exercise and/or insufficient calories & nutrients, the body goes into stress mode where it starts holding fat and shedding muscle. This is probably why you felt you still had too much body fat even at such a low weight. Unless you work your muscles with sufficient poundages, aging and disuse contribute to muscle loss.
I perfer reps over weight, simply because I want to look lean.
The real secret is WEIGHTS at sufficient poundage to build muscle. If you want to look lean and cut, there's got to be some muscle there to cut to. I found the heavier I lifted, the leaner I got (training in the 8-10 rep range vs the 20+ range). Unless you supplement with anabolic steroids, you have a 99.99% chance of NOT getting too big.
In your training and eating, think of yourself as an athlete rather than a dieter. It's a more positive goal. That's what my quote at the bottom is about.