Asterisk SIP TRUNK DID

Hi,
Greetings,

I want to configure SIP TRUNK
from a provider
and use DID

for inbound and outboud calling

My hurdle would be to acquire SIP TRUNK and DID

I am from India

I am an individual not an organization
I want to configure this as hobby

One usecase I want to implement is
that I should be able to do IVR surveys and marketing
Robocalling

I am curious about VOIP Asterisk

I also am curious how to use VICIDIAL for callcentre
or contact centre and use SIP TRUNK in it

Where to find training
I bought some udemy courses that still left me confused

I want a free or low cost solution

Can you point me to useful youtube tutorials
or online tutorials and training

I can opt for low cost training on Asterisk and SIP TRUNK

I am from India.

Regards.