I've found that for me, it's best to warm up with the thin end and then switch to having the bulb inside. The bulb provides amazing g-spot stimulation for me, that why it's my favorite toy at the moment.
The toy is also great for anal use, the bubbled end is similar to anal beads.
Alternate use: the bulb makes a comical magnifying glass.

I love the smoothness of this toy, being glass it doesn't require much lube, if any, at all. I have tried textured glass toys and haven't liked them nearly as much as this smooth toy.
Because it is so hard, some care must be taken when thrusting. For instance, I'm a little wary of letting my S.O. use it on me, communication is a must when using something this unforgiving.
When I first looked into buying a glass toy, I was a little scared at first. When I think glass, I immediately think about broken glass. The thought of broken glass inside of me was absolutely terrifying. But after doing more research I realized that a glass dildo is highly unlikely to break, the human body cannot break it via orgasm. The first day I had this toy, it managed to roll off the bed, onto the concrete floor. oh no! After a careful and thorough examination I saw that the toy was completely fine, not even a scratch. After that I haven't worried about it breaking during use...you'd probably have to be Thing from the Fantastic Four to hurt it.

I love the form of this toy, at first I didn't much care for the bubbled shaft, then I tried it anally and 'oh!' it's wonderful! The bulb on the end provides great g-spot stimulation for me, I can't guarantee it will for you though, every body is different.
The toy is somewhat discreet. People won't immediately know what it is, but it's quite lovely, so they might ask.

When I first received this toy I was so excited! I'd wanted to try glass for a while and once I finally held the toy in my hand it was just so pretty. Ever since that day it's become my go-to toy, it basically guarantees I'll get off, even if I'm not that turned on. I love how hard it is, I love the bubbled, wave feature, I love the bulb end, and I love how cheap it is.

When storing, I'd recommend a padded bag, I'm not saying it's going to break without one, but I've stored mine in a wooden box for several months and it's beginning to get some minor abrasions on the bulb where it rubs against the wood. It's nothing serious, it just doesn't look as pretty and shiny anymore.
Because the toy is glass, it is very easy to clean, it's non-porous, you can bleach it, boil it, run it through the dishwasher. I normally wash it with hot water and some isopropyl alcohol.
Glass can be used with any type of lube, and also doesn't require much lube because it is so slick.

The toy came in a padded box that was made just for it (hard, foamy material with a cutout that fit the toy exactly). The outside packaging wasn't the worst I've seen, but it was a little tacky. (But hey, it's a sex toy, what do you expect?)
The inner packaging might be good for storage, but I didn't find it necessary.

This is one toy that I can always depend on to not only give me multiple orgasms, but also make me gush.