Go online and order.

There are numerous resources available, from books and online courses to local meetups and forums where you can connect with experienced investors.

.: doorknocking, cold calling, speaking with online leads, contacting people within your sphere of influence, engaging with people on social media (not just posting), meeting people at networking events, etc.2.

Also, having a simple online presence that tells your story will make a big difference.  

I am thinking about just finding some templates online but not sure if there's a better way to go about it.

Build Your Buyer’s ListNetwork with Local Investors: Join online real estate groups, forums, and local real estate investing associations (REIAs) to find investors in your target markets.

Stop looking online and find an investor-friendly agent in your target area.

Join local meetings, attend real estate seminars and workshops, participate in online communities, and network with local real estate agents.

What are good strategies or online calculators to help make rehab estimates? 

I do believe that, because of technology (on line deed information and ability to filter such) and higher interest rates, we will see more acceleration of loans due to due on sale violations than in the past.