Coming from Second Life--With slow progress. . .

[ssmeier]

I did the following Google search: "snap to align faces site:http://www.wings3d.com/forum/"
A result was this:
http://www.wings3d.com/forum/showthread.php?tid=167
Newbie Alignment and subdivision question
Answers by Fonte Boa who made two YouTube videos:
https://youtu.be/n9KS2dtkOy8 - Wings Snap
https://youtu.be/FZqSbwNYoK8 - Wings Bounding Box

First video steps:
Align edge to edge.
( a ) Select an edge in the face you want align.
( b ) Right click on Edge | Absolute Commands | Snap
( c ) Re-select the initial edge, right click to continue
( d ) Select the target edge, right click to continue.
( e ) In Snap window, check "Move object" and click "ok".

Just remember: at (b) step, you have to right click on Snap command.

Later Fonte Boa adds this for the second video:
Do the same I did in video but using Vertex instead of Edge:
( a ) select the first object
( b ) call Vert | Absolute Commands | Snap (right click on it)
( c ) select the vertex to be aligned (in the first object)
( d ) right click to continue
( e ) select the target vertex (in the second object)
( f ) right click to open Numeric Input
( g ) click "OK" to execute

-Steve