Tux Guitar comes to mind but some things like chord diagrams isn’t done as well as guitar pro (imo).
For chord diagrams (like at the top of GP), there’s hundreds of websites out there which show those and its probably quicker to just use those. I’ll usually just search “C chord <instrument>”.
You will speak the version that you learned. You will mostly notice regional differences in the idioms and synonyms of the words you know might be used more commonly in one region vs the other.
For example, in London you might hear people use boot instead of trunk.
But the majority of the words will be the same regardless of region.