Firstly, training advice is all over the place because people don't have the same goals, and people explain what they did without explaining why they did it. Some examples... "Don't jog, ONLY RUN."

• my take, this is ok advice if you're training for a sprinting event and that's about it. Aerobic enderunce is important to almost any physical feat, and most people want to lose body fat. You arent going to be losing body as fast as you could if you're never doing low intensity cardio. My advice for just about everyone?
• 1 to 2 sessions (3 max) of high intensity interval training per week, with 2-3 days in between each session. Start with 12 "sets" of 15 seconds all out sprints separated by 60 seconds of light jogging. So it would go like this, sprint for 15 seconds (1), slow to a jog, jog for 60 seconds, pick back up to a sprint for 15 secs (2), and so on and so forth. Add sets or reduce the jogging time as you progress, but don't go longer than 15 seconds max intensity because you will just start taking the focus off going all out and into endurance. These are FOCUSED workouts. They are also tough on your body so make sure to recover the 2-3 days. -you want to balance those sessions with 1 to 2 (3 max) sessions of low intensity steady state cardio. We are doing this for endurance, body composition, a healthy cardiovascular system, healthy hormone levels, lowered stress, and better recovery after bursts of anaerobic work. This is simple. Walk, jog, bike, anything light intensity, for 30-45 minutes. Do these while waiting the 2 - 3 days in between HIIT sessions.
• Weight training - first evaluate your goal. Are you looking to build pure muscle mass with no functional strength concerns? Are you looking to lift as much as possible and could care less what you like? Or are you like 95% of people who want to have a little bit of both.. you want to be functionally strong enough to defend yourself and deal with dangerous situations but also want to look good, healthy, and in shape? There is nothing wrong with this goal. It's a great goal to strive towards and like I said, 95% us of want that balance. Well, you will often hear that beginners should start with a "5 x 5" program. This isn't bad advice, per se, I just think it needs a caveat. Beginners focused on strength over aesthetics should do a 5 x 5. If you care about aesthetics too, I would do something that retains the best aspects of a 5x5 but that blends it with other styles of training. What does that mean? It means Google "reddit PPL" and follow the routine. As far as how often/how many/how soon, start with the lower side of my reccomendations and add more over time. Maybe week one you do a hiit training on monday, a 30 minute jog on thursday, and start the PPL with less days per week (there are two options) Week two repeat. Week three add another HIIT and LISS day. So Monday do a high intensity cardio session, Wednesday do a low intensity 30 min jog, friday do another High intensity, and Sunday do a 30 minute jog. Keep up with the program of the reddit PPL. Then you can start adding to the workouts a bit until you're at a good place. Instead of 12 sprints do 1 more each session towards 15. Do 5 minutes more low intensity each week up to 45. Get to the upper levels of my reccomendations at a comfortable but consistent pace. As far as nutrition goes I'd reccomend googling "macro calculator." Pick one, fill out the information, and use the information it gives back to you to plan your meals accordingly. That's it. If you are 95% of newcomers to fitness this will do you dandy. In fact you will be significantly ahead of almost everyone starting out trying to do the latest trend. I've included plenty of aenorbic training for intensive situations or combat prep, plenty of aerobic work to get all the benefits it brings and to help compliment your fitness /make it versatile if you ever need to keep up an activity (like when Rittenhouse spent a few minutes jogging away from the mob), and a weight lifting routine that blends compound lifts and constant forced progression with lifts that fill in the gaps left by the big compounds and adds some focused hypertrophy training. In other words lifting focused on strength gains and muscle size/appearance... Combine this with the exact diet you should be eating, catered towards your specifications and individual goal, you're on an excellent path towards the best shape you've ever been in both functionally and looking in the mirror. Questions are welcome but trust me when I say this is all you need to get going (other than looking up the individual lifts of the program). Don't overcomplicate things. Start doing and if something isn't for you don't be afraid to seek out a more specialized program/make changes. Hopefully this at least helps someone.