Starting strength is good but Rippetoe is very old school and the community has some cultish vibes. He is totally inflexible about any slight variation like high bar squats and trap bar deadlifts, which are great exercises and often better. His forums are not particularly friendly either. (Example: https://startingstrength.com/resources/forum/mark-rippetoe-q...)
I think stronglifts is generally a better program for beginners:
Been powerlifting for 15 years and I strongly disagree.
Stronglifts basically aped Starting Strength with minimal tweaks to justify separate branding, and only caught on over SS because of the slick app. Rippetoe has been coaching strength for many decades and was a competitive lifter himself, with his all-time PRs for squat and deadlift being a little over 600. He’s trained a network of coaches who command crazy prices for training because the cert is prestigious and incredibly difficult to earn. He was a key contributor to powerlifting and weightlifting components of CrossFit, until he (justifiably, imo) became disillusioned with the franchise. The Starting Strength book is an incredible resource for powerlifters, going into extreme detail into how to do the lifts, why, how to avoid getting injured, how to do your programming, and how to tell when you’ve outgrown Starting Strength. The forum you linked is actually an incredible resource where you can get free form feedback and general advice from the actual coaches (and Rippetoe), with no analog in the stronglifts community. (Is there even a stronglifts community?)
Mehdi, on the other hand… is some guy who made an app. He’s not even a particularly impressive lifter, and was a decidedly unimpressive one when he launched SL.
On the programs themselves: 5x5 is inappropriate for beginners. In no time at all you will hit a progression wall, and your workouts will take forever, where 3x5 could have continued without a hitch, for no upside. And despite the suggestion that more reps means more practice, the fact is that ESPECIALLY for beginners, doing a zillion reps in a state of fatigue is a great way to get hurt.
Barbell rows are such a poor substitute for power cleans that Rippetoe no longer recommends them at all, and the newest edition of the book expresses remorse for ever having made the suggestion.
But even putting all that aside, the most important part of SS is that it is essentially complete and will carry you for 6-9 months with no modification. Because as the commenter up the chain said, fuckarounditis is the most popular way to fail at getting strong. All the common complaints (“waah my biceps aren’t big enough”) are trivially addressed at the intermediate stage, once you’ve built a base of strength and a habit of training. This is why they are “cultish” about variations: you can do all that once you’ve run out your beginner gains. Until then, you don’t know what you’re doing and shouldn’t mess around.
Leangains is a relic of time. Martin Berkharn(the guy who made it) was a VERY prolific poster on the bodybuilding.com forums around 2005-2012 or something like that. The tone of his entire brand is born out of that forum and style of communication. You had to fight for your life on there if you wanted to communicate.
Leangains is a great resource. Do not let the tone distract from the content. The content there went mainstream much later(IF) especially so he was ahead of the curve.
An IF protocol with a daily energizer routine worked wonders for me.
I think stronglifts is generally a better program for beginners:
https://stronglifts.com/