looking for expert on freeswitch

Hello i am looking for an expert user on freeswitch pbx system. i need to learn lot of things on this freeswitch depend on my time time need. at the moment i am using fusionpbx for the multitanent. but i need to learn few things like inbound route outbound route dialplan how works etc etc etc. i am a advance user so i am looking for expert user. person will be help me on the anydesk on my laptop so i can learn. and i can ask question and have answer straight. not like you google and tell me as i can do the google too. i am quick learner. basically i am stuck on the regular expression on dialplan. i made a regular expresson but i need to block few prefix. so an expert user i am looking for. payment will be in hourly basis thanks