That's an amazing gift to receive @thekitchenfairy! I was gifted my first didgeridoo by a full-blood tribesman from the Pinjantjarra tribe when he was on walkabout when I was 17 years old.
I taught myself circular breathing in a few days and have been playing ever since.
It's such a medicinal thing to take up as a practice.
All new things take time to learn and eventually master.

Preserving the didge: it's important to keep the insides of it regularly moistened, usually by playing in the didge regularly, or by putting fresh, non-chlorinated water (from a freshwater creek) through it from time to time.
Don't worry about the bugs. Insects will take the opportunity to make it their home. Most won't cause damage to it though.
:)