I'm currently obtaining a credit card and am going to start building my credit do you have any other advice on how to start (or action I can take) to move forward?

So start it, that will also light a fire under the tenant to take action.  

Just wanted be prepared with action steps after the ADU gets built.

Just wanted be prepared with action steps after the ADU gets built.

I am looking for a way to make my process of placing a tenant a little less time consuming.

Your easiest and likely most reliable course of action is to call your local tax office and ask why your assessment doubled.

States put real estate license laws into place to protect consumers. 

There are many statutory deadlines for notices and actions that need to filed, so I highly highly recommend engaging with an attorney, such as @Emmett R.

Good Morning Bigger Pockets Family, I recently listened to BP episode 527 and episode 528 with Pace Morby, and I (like many of you) was inspired to take action with the immense wealth of knowledge he provided on securing seller financed deals.

There's so much content on real estate investing you can spend years consuming all of it.