However, lots of CUs and Locals are requiring you to keep deposits with them if you want a loan - typically around the 10% mark.

Popup Meetup, LinkedIn, Facebook Groups and other online platforms can be helpful in this endeavor.

Are there specific networking events, online platforms, or strategies that have proven effective for building relationships with investors?

Hi as Steve and Jason pointed out it is very important to keep funds seperate.You will need an escrow account, if it's required by law, your account will need to be titled XYZ ESCROW ACCOUNT, if not so required, it can be any account but ONLY deposits and funds held in trust should ever be depoisited to this account and any withdrawl should be well noted on the check and on your books.If you comingle you accounts and you need paper towels to clean units, the IRS can simply disallow your deduction saying it was used at home since it was paid from a personal account or one of comingled funds.I too would suggest you formalize a business entity, an LLC probably.

Two years ago when the entire market was red hot most listings in my area required a pre approval or proof of funds with the offer if I remember correctly. 

A lot of the things a mortgage company requires is to protect their financial interests (and subsequently protect you also)....getting title insurance, a survey, an assessment/inspection, and requiring home owner's insurance. 

My experience does not agree with yours as I do not see Ohio everywhere online and I invest in the Midwest. 

It does not need to rain nearby to get a flash flood down a wash, that is why hiking slot canyons requires a knowledgeable permitted guide (definitely a bucket list item). 

Please feel free to also checkout some of my online content that's geared towards newbie investors - you might like it!

I been looking at some properties online, would you guys say this is a good deal or not?