Advice planning how to run point-to-point fiber

Hey /r/networking,

I have a background in networking but I ran into a scenario which I have no formal experience with.

Scenario:

Location A is located too far from the nearest road to have a line run to is from the areas ISP. Location B (a potential neighbor near Location A) is located near enough to the road to have a line from the ISP run to the location. Assume Location B already has a line run and working.

I would like to run fiber from Location A to Location B in order to bring internet access Location B. I would like to do this by employing two Unifi PoE, SFP switches.

Networking considerations which I am looking for advice on are:

1. What would be the best way to configure this setup so that both locations have a separate network (So I can run APs and configure each locations VLANs based on the locations needs). I'm thinking I could just use separate VLANs, but I would like advice.

2. What term would I want to research in order to better understand the 'bridge' I'm looking to create between two switches so that they can share the same WAN connection, but on different LANs. This is important so that I can research Unifi settings and methods for properly configuring this kind of 'bridge'.

3. How many SFP cables should I look to run for redundancy and the ability to switch cables should one fail?

4. What connectors and considerations would I need to research when considering the hardware I need to establish SFP connections (I understand throughput, max distance a signal can be sent, and that I will need an SFP NIC, but I'm sure there's other things I should research). I have never had the chance to play with, or install any fiber connections before so all my knowledge comes from studying for the A+ and my past education.

5. Do you usually bury fiber in a sort of pipe? If so, how deep if the area between Location A and Location B doesn't include any roads and is on private land.

6. What do labor costs for a job like this usually run per hour?(ignore the cost of manual labor to dig a trench from location to location)

Edit: If thorough advice cannot be given, but you have topics and terms I should research feel free to share them. I do not expect to have my hand held for this project. I'm looking for advice on how to better understand what this process involves so I can increase my knowledge in this amazing field.