I suggest you google look for free 30 day trial.  

I have already used up my "trial" look ups and am at the point that I would need to subscribe in order to continue using the service, so I am trying to justify if it is worth the cost.  

I got a book on framing and watched some construction projects to learn that end of things but the drywall repair was pretty much trial and error and self-taught.

The best lessons that I've learned thus far have been through trial and error.

Its coming up in trial next month because the lease clause and the addendum clause concerning terminating tenancy have different rrequirement language.

Should I just go into one on my own and give it the ol trial by fire treatment?

Both them and AirDna have trials you can check out and see if the information is helpful before you commit to a paid subscription. 

Life's too short to wind up as a witness in a trial that runs a year and a half.

As what may be good for someone may not work for you depending on your style etc. it’s a trial and it took me multiple attempts before I found one that worked hard and could get done what I needed.In regards to a number, I use google voice

For me, saving the stamp and effort of printing and putting said letter in the mail is well worth $2ish.I'm still trialing both options so i can't really give a clear winner one way or another, but either one is a great option in my opinion.Hope this helps!