The Personal Responsibility Diet

Your Fitness Filter
You're an adult. You make thousands of decisions for yourself every day. Some little, like what pajamas you'll wear to bed; some big, like what course of action you'll take regarding your livelihood, health, and future. 
You are your best expert. So when I tell you about fitness, weight training and food, I expect you to pass everything you read through your own little filter of what you've already tried, what's practical for you, and what will and won't work given your own set of circumstances and current health. 
You're a critical thinker, not an automaton who is going to blindly follow recommendations without first considering your own body, schedule, abilities, and the context of the other things going on in your life. 
You're also surrounded by a wealth of information. There are plenty of people who share their thoughts about fitness to the masses, and you continually have to weigh the pros/cons of every option for yourself.
Information Overload
I'm not going to pity you if you're confused by all the conflicting information you read and hear on a daily basis. We all have bodies. We are all responsible for our own bodies. Some of the ideas you'll read may be worth your while to investigate, others may not. That's up to you to decide.
We all have to start somewhere with gathering information, testing out what might be useful, and discarding what doesn’t work. This is called trail and error, and you are not helpless. 
You know where a gym is. You know where to find the produce and the deli in your grocery store. 
Learning how to get in shape is like learning any other skill. It just takes time, and you can take all the time you need. In fact, the more slowly you integrate healthy behaviors into your life, the better they'll stick.
So if you're totally out of shape, and you blame it on the diet industry, the media, or other people giving you too much information, I'm calling BS.
The truth is, you're either uncomfortable changing the lifestyle you've grown accustomed to, or you simply don't want to make the effort of figuring out which information will work for you. 
Nutrition isn't Religion
People who write about diet and fitness will disagree with one another. And some will villainize those who have a differing perspective. We're all trying to help people become healthier, but our understanding of what's healthy conflicts. 
The most acrimonious health experts are as fanatical about their beliefs as ISIS, the KKK, and Westboro Baptist church.  
But nobody's going to hell over their views on carbs, cardio, or supplements. Fitness is not a religion and it shouldn't be your identity. It may look like mine because all I post online is fitness-related stuff, but that's only because the rest of my life really has no business on the internet. 
Weaklings and Wackos
The only way to develop the skill of getting fit is just to start. Make some commitments, stick with them, drop what doesn't work, and continually try stuff until you figure out what does. 
No expert can contrive every scenario and combination of body type and goal to know what will be a perfect fit for you, personally. And what will work for you personally will change depending on your activity level, your schedule, your physical abilities, your preferences, finances, and priorities.
Sometimes -- ironically -- trying something counterintuitive to your beliefs will work wonders for your health, and free you up from stagnation and self-sabotage. That's why it's dangerous to get attached to dietary dogma and assume you must eat the same exact way for the rest of your life. 
There's no need to become a fitness zealot when you find something that helps you; because chances are, if you allow yourself to fall in love with this whole fitness thing, your needs will change and you'll find something that works even better later on. 
Commit, but don't get brainwashed. Succeed, but don't be a sucker. 
Take responsibility for your own body and stop making "too much information" your biggest excuse. Listen to differing opinions, and form your own through experience. Then tell people about what you've learned if you think it's helpful. 
Scoff at the idea of helplessness. And stay above the fanaticism. The world has enough weaklings and wackos.