I'm not exactly a novice when it comes to anal play, but I am a novice when it comes to anal toys. The Anal Jelly Stuffer was my first anal toy, and I am quite pleased with it.
This toy does require some stretching of the sphincter muscles before penetration, as the third bulge is surprisingly difficult to insert. Even after stretching myself with my fingers, getting over that third bulge was a challenge. I tried three times before I finally got it all the way in, but boy was it worth it!

It provided a very full feeling, and walking around the house with it in is absolutely fun and stimulating! I wouldn't wear it out of the house, however, because the square end makes a funny bump in the seat of your pants and looks really funny when you walk. Even baggy pants look weird (if you bend over). That being said, a long jacket or a sweatshirt tied around the waist would probably hide it well enough.

When I got brave enough I tried thrusting the Anal Jelly Stuffer gently, and I must say that I love the sensations it gives! The bumps are wonderful, though it is very difficult/frustrating to thrust in fast/hard because of the floppy jelly material.
I bought this toy in conjunction with the Waterproof gal pal chubby, which I used for double penetration. It worked out quite well as the Anal Jelly Stuffer was just the right size to stay put, so long as I didn't unclench my muscles while thrusting. It did start to slide out when I aimed the Waterproof gal pal chubby downwards, but it didn't move much beyond the fourth bump.

I inserted it vaginally as well, on a separate occasion, and wasn't as impressed. The bulges still feel wonderful, but the flexibility of the Jelly material didn't allow for good thrusting. I did enjoy it vaginally in conjunction with a clitoral vibrator. As with all jelly toys make sure to use a condom, ESPECIALLY when using them for anal play or sharing, as the material can't be completely sterilized. Lots of lubricant is recommended as well (I prefer water-based)

This toy also has a peculiar odor as well. I've had this toy for about two months, and the smell (somewhat like grape cough medicine) still hasn't disappeared, though it's not as strong as it was straight out of the package.