Can I use a regular email address for my business LLC?

If you provide seller financing, make sure you are a named insured on the insurance certificate like a regular bank. 

I converted my home to a rental a few years ago and I did not set up any special accounts- just a regular checking account.

Whatever you can do to increase your savings or increase your income: cut out unnecessary expenses, work a side job, put money into a HYSA as opposed to a regular savings account earning 0.1% interest.

To pick the right house, use sites like Zillow, Redfin, and Realtor.com, know what's going on in the local area, and look at loan options like regular bank loans or FHA loans.

How it is different from a regular transaction? 

Since I vetted the tenants and regularly did property inspections we were okay with not having the extra protection of having it in an LLC.

Finding, retaining, and monitoring housekeepers4.

Hey All,I am starting a project about 2 hours away and would like to monitor the property remotely without making a 2-hour drive, so I am looking for recommendations on security cameras.

There are plenty of other 'regular' neighborhoods that can still perform to your expectations and needs.