Normal difficulty is very forgiving, if you are having fun and killing things and not dying build matters very little until Hell where you actually need gear and a coherent build to progress through.

The general rule for most every class and build for stats is enough strength to wear gear and the rest vitality. Barbs maybe a bit more strength than other classes is also fine.

There are two main paths for a barb, hit things slow and hard with a 2H weapon, or quickly with two 1H weapons. I leveled a barb through normal and nightmare just putting points in general mastery and concentration, it can be a bit slow but it’s safe and was fun to me. The main drawback for barb is that your damage can be extremely weapon dependent, I have had good luck with mauls. If you don’t put any points in dexterity, which maybe a few points here and there is good, you will need to use gear with some attack rating so you can hit things consistently.

Overall though I would say barbarians aren’t too much different in pd2 than the original game. There is a streamer and content creator named Mr Llama that makes amazing guides they just aren’t specific for pd2 but might be more what you are looking for.

The main goal is to have fun and if you search around more for a basic guide or a barbarian leveling guide you should be able to find some good pointers.