What’s your SEO workflow?

hi all,
Here's my goal:

1. Build a site for local handyman in Las Vegas, NV
2. Make SEO for it.

I'm at the first stage now..

Question:

what tools you guys use: free/paid for check for backlinks etc?

What is the checklist for me at this stage?

My site is WordPress and I am optimizing content, title, keywords etc within it