All the tools in Blender 2.8/2.79 are also and always will be in 2.91/2.9, they are just in different places and rearranged. If you’re learning. 2.8 and 2.79 would be good to use, but you should definitely switch to the latest version once you’ve got it done.
Just to note: the latest version Blender 2.9 and Blender 2.8 are similar the tutorials you find that are using the 2.8 version can be done with the newest option all they did was add a handful of features to the latest version. Since your completely new to this software; you can start with any version.
I’ve started with the older version; Blender 2.79 to get comfortable with the tools and curve and then moved to the latest version 2.8. All Blender has done with 2.8/2.9 was change the interface and tools and added a few features it’s nothing different from the both version.
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