Bonsai help please!

I got a bonsai yesterday - soil was very dry when I received it so I watered. Today many of the leaves were green but crispy and falling off. I trimmed what I believed to be dead/brittle branches and leaves. Not sure if that was the right thing to do, it now looks very bare and I'm worried it's dying? I put it in water in the sink for 10 minutes, as I read that's what you should do when they dry up. Still green underneath the bark. Any advice would be massively appreciated! Not the best start to owning a bonsai, but I really want to learn!

Top picture is what it looked like this morning - bottom two are now.

Thanks in advance!

 

Hi Looks like
Tree of a Thousand Stars - Serrisa foetida not the easist to start with as they dont like to over watered or kept dry, a sunny windowsill is best ...if un happy the leaves drop off .... give it a chance it may grow back

 

Thanks for your reply! I believe it's a Chinese Elm, I've heard they're suitable for beginners. I'm really hoping it may be just a bit stressed from the change of environment and will grow back!

 

Not that easy to grow ...

 

So it seems!!! Keeping fingers crossed!