How to use IHttpClientFactory or HttpClient to call multiple API's?

Question

Hi all,

 

I am new to ASP.net core web API.I was trying to create a main API which will call 2 services (concider these 2 are micro services)

 

1.api/school/getdetails

2.api/college/details

 

i gone through some article and i understood  IHttpClientFactory or HttpClient can help to this but i am not sure how to use these.Lots of articles confusing me..

 

main api should be......... http://SYS09X.com:5008/api/school/getdetails

 

MainAPI........calls.........school service,college service 

 

please help me with some article or suggestion for my understanding