Taking apart and reassembling stuff can be a fun challenge; there is a feeling of satisfaction when everything goes back together and there are no leftover parts.
You may want to teach yourself to go through the column repacking bearings, cleaning/regreasing moving parts, and cleaning up the turn signal switch contacts. There are many guides online on disassembling a GM steering column.
Once the signal switch assembly is out, it can be further taken apart to access the brass contacts. The contacts should be degreased, lightly scuffed until they are shiny, regreased, and reassembled.
Alternatively, you can buy a new assembly; they are not that expensive.
While you have everything apart, you can also clean/scuff each plastic part and repaint them with plastic paint. Doing this exercise would be good practice before taking apart a tilt column, which has more parts.
To adjust the reverse lamp switch, it moves from left to right relative to its base. The 2 pieces are engaged by a series of detents. The switch will click as it moves. While you have the column out, it will make more sense. Or you can easily remove the switch from the column while the column is still installed to study it.