This was a bit difficult, I followed the instruction in purchasing the bulb, but when you buy a bulb for a candelabra, the base is too small. If the base is big enough, the bulb may be too big to fit in the opening of the glass orb. Be very careful when you buy a light bulb to go with this lamp. The touch lamp works perfectly, and if you get a bulb that works with the dimming function, it is fabulous! It was a bit of a struggle for me though. We went through three different light bulbs before we found one that would work.