Offset surface

Support Modeling
1

Hey

Does blender 2.9 have an Offset surface command?

can be addon too

thanks

2

Not sure what you mean, have a look at solidify modifier.

3

Or try [alt-S] in edit mode to scale along the normals?

4

what material about blender shortcuts do you recommend? pdf ? Image ?
I saw that there are several on the net, which is the most complete and efficient?