If you don't have a puller, several auto parts stores have them as loaners.
Use a sharpie to index the wheel boss and shaft end before pulling. Most have an index mark, but a large mark makes it easy to see.
I have seen people pull them without a puller, but save you energy for fighting battles with big spoils.
Steps.
1. Remove the horn bar. Carefully as the horn wires are attached to the brass plunger contact to ground the horn.
2. Remove the two nuts and strap under the dash that hold the mast in place
3. Remove the turn signal lever.
4. Remove the screws that hold the switch in the cup, and then rotate the cup to get it past the small lugs and puill it toward you about an inch.
5. Look under the dash at the bottom of the mast and you will see the harness cover.
6. Remove the clip from the end near the pedals and then the harness cover should drop out.
7. Disconnect the lower end of the harness and now you should be able to remove the switch.
Reverse to put it back together, but make sure you use bearing grease and grease the bearing.
I use "Red and Tacky", as it stays in the bearing and the turning action helps the grease "stir itself" and keeps things lubed.
I also use a little di-electric grease in the switch area and the sliding plastic parts to keep them lubed.
Hope that helps. (and that I did not leave anything out...)