At the main page of the forum there's a link to "How to shave your head." That's a good place to start. On the equipment, well--IMO, I would use the razor you currently use on your face at first, you may move on to something else later but your technique is probably easier to develop at first with familiar equipment. The second picture is of a clipper, that's not going to give you a blade smooth dome, there are some electrics that come close but for this bald guys money, the blade is the business.
Don't forget to start with a fresh blade, a scalp trimmed of as much remaining hair as possible and then take a nice leisurely shower as hot as you can comfortably tolerate. Shampoo liberally and leave your head wet when you get out and dry off. Apply some shave gel or cream and slowly take the blade down the center to the back, then down one side and the other etc. Take your time, speed will come later. Then when you've finished rinse with warm then cold water, dry and apply a quality after shave balm. You're Sly, enjoy.
