Populating custom field values for a post

Good evening everyone, I am having difficulty grasping the intricacies of what I think is a fairly simple undertaking. Can anyone tell me if I’m on the right path, way in left field, or better yet, if there’s a plugin or snippet out there that would make my life a lot easier.

I have a table in excel that is loaded with data. (ids, business-names, addresses, phone-numbers, hours, and various other schema and non-schema data-types) I want to use that data to create a post in wordpress but I’m fairly green when it comes to this sort of thing.
Here is how I would think to go about it:

1) I need to convert my excel spreadsheet into a .csv so I can upload it to my server. (Although I have no idea where in the server I should upload it to.)

2) Code a php script that calls for specific columns of a row which is defined via a custom field and ‘id’ input by me. (I have a general idea how to do this but it will take me a bit of tinkering)

3) Code a script to retrieve and display the corresponding data for some custom fields which can then be referenced within the post’s template (eg. [name], [address], etc.)